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1Back to top Go down    Recommended oils?? on Mon Mar 14, 2016 7:06 am

Reg

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Any body know recommended oils for engine/ gear box/ final drive for the K11??

    

2Back to top Go down    Re: Recommended oils?? on Mon Mar 14, 2016 9:03 am

88

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Jesus Reg....don't start the  oil discussion again.  Rolling Eyes

I'm using Total 15w 40 in the engine because it's what I had to hand. Bricks aren't known for Oil related failure SF or SH spec

Hypoid Gear oil API class GL-5  SAE 80w/90 for the Gear box and FD.


__________________________________________________
88....May contain nuts!

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

Bike: K100LT 1988. 0172363. AKA the Bullion Brick! Mods: k1100 screen and stands.
K1: 1990. 6374189. Custom Stealth Black paint.
    

3Back to top Go down    Re: Recommended oils?? on Mon Mar 14, 2016 9:29 am

Dai

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With a bit of molyslip in the gearbox and FD Very Happy . IIRC there was something not quite right with the SG grade oil spec for the Brick.


__________________________________________________
'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

4Back to top Go down    Re: Recommended oils?? on Mon Mar 14, 2016 9:32 am

Holister

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Aww no!! Not another oil thread.... Someone had to say it 🤡

Engine Oil: Nulon Full Synthetic 10W40
GB/FD Oil:  Nulon Synthetic 75W90

BMW do recommend synthetic engine oil and I think issues like sprag clutch problems are caused by using a mineral oil with low detergent.


__________________________________________________
1988 K100RT     VIN No.  0094680
1989 K100RT     VIN No.  0097367 (naked)  
1996 K1100RS   VIN No.  0451808
     Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

5Back to top Go down    Re: Recommended oils?? on Mon Mar 14, 2016 9:34 am

Kyle10

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Close this discussion as soon as possible,  please. It never ends well. 
Just buy something reputable and slippery and change it regularly; your bike will love it.


__________________________________________________
1985 K100rt 0052183
1983 Honda VF750 007713 
    

6Back to top Go down    Re: Recommended oils?? on Mon Mar 14, 2016 10:05 am

92KK 84WW Olaf

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@Reg wrote:Any body know recommended oils for engine/ gear box/ final drive for the K11??

Ah now is this like the debate between Guinness and Murphys?

How are you for advice on tyres?


__________________________________________________
1992 K100LT 0193214 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 58,645 now 60,500 miles
    

7Back to top Go down    Re: Recommended oils?? on Mon Mar 14, 2016 10:11 am

RicK G

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I have used Shell HX5 in everything I owned for more years than I can remember, it's always been good but there are many other oils out there that are just as good and far better than what was available 20 to 30 years ago when these contraptions were made.
You can use synthetic and increase the intervals between changes. I have just serviced the K1100 and have put synthetic Nulon in the transmission and drive. It very definately changes smoother especially on the down change.


__________________________________________________
If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

8Back to top Go down    Re: Recommended oils?? on Mon Mar 14, 2016 10:16 am

Point-Seven-five

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Must...  Not...  Post..........

No...   No...  Must not...  Post...

..........Shell......     ....Rotella T6...    

.....Full Synthetic...             ......   $21.36/gallon...    Walmart

.......Walmart...       ...GL-5....    ...Synthetic 75W150........      ......I add... ...

...2 tsp.........       .....Molybdenum disulfide........        ....powder.......

........To....      ....trans.......       ...for........    Silky smooth......  


.....shifting...........

..A....

      ....R.R....R


                  ...R.......R..

                               .....RG..H


__________________________________________________
Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

9Back to top Go down    Re: Recommended oils?? on Mon Mar 14, 2016 11:37 am

92KK 84WW Olaf

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Ah yes those little US gallons. We get bigger gallons over this neck of the woods.

I guess something to do with the 'aye me hearties' lads landing the rum US side with less than the loaded amount and saying 'it evaporated through the oak barrels' while singing 'What will we do with the Drunken Sailor'.

They didn't worry about oils or tyres........

When we were in France last year Bob put some baking powder .....Molybdenum disulfide........        ....powder in the bikes too. Its good stuff.


__________________________________________________
1992 K100LT 0193214 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 58,645 now 60,500 miles
    

10Back to top Go down    Re: Recommended oils?? on Mon Mar 14, 2016 11:58 am

Point-Seven-five

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Just don't put molybdenum disulfide in the engine.  It will kill your sprag clutch.  DAMHIK


You have been warned.  Your oil can be too slippery.


__________________________________________________
Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

11Back to top Go down    Re: Recommended oils?? on Mon Mar 14, 2016 12:20 pm

92KK 84WW Olaf

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@Point-Seven-five wrote:Just don't put molybdenum disulfide in the engine.  It will kill your sprag clutch.  DAMHIK


You have been warned.  Your oil can be too slippery.

No, it went in gearbox and final drive....


__________________________________________________
1992 K100LT 0193214 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 58,645 now 60,500 miles
    

12Back to top Go down    Re: Recommended oils?? on Mon Mar 14, 2016 3:34 pm

Corkboy

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Recommend oil in the engine, gearbox, and FD,

In a word......Yes   Laughing

I would heartily recommend oil in these locations.

Now, would I recommend tyres on the wheels, that's another matter.


__________________________________________________
Regards,

Corkboy '87 K100RS SE (The black one - one of the two bikes I'm sorry I sold)
             '87 K100RS 0140995 (Gone)
             '97 K1100LT 0188024 (Gone)
             '08 K1200GT Wedge - but still a K
             '08 Transalp 700
    

13Back to top Go down    Re: Recommended oils?? on Mon Mar 14, 2016 5:16 pm

Motorbike Mike

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Kaptain Holister wrote:Aww no!! Not another oil thread.... Someone had to say it 🤡

Engine Oil: Nulon Full Synthetic 10W40
GB/FD Oil:  Nulon Synthetic 75W90

BMW do recommend synthetic engine oil and I think issues like sprag clutch problems are caused by using a mineral oil with low detergent.
I use these synthetic grades in all my 8 and 16 valve K's without any issues. My K100 track bike has been mercilessly thrashed on track days often up to the rev limiter and all's well. Gearbox and final drive also good.

What else could you want from your oil??

    

14Back to top Go down    Re: Recommended oils?? on Mon Mar 14, 2016 7:22 pm

Point-Seven-five

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@92KK 84WW Olaf wrote:
@Point-Seven-five wrote:Just don't put molybdenum disulfide in the engine.  It will kill your sprag clutch.  DAMHIK


You have been warned.  Your oil can be too slippery.

No, it went in gearbox and final drive....
I saw that, and wanted to warn anybody who might think that putting it in the engine is a good idea.

I made the mistake of using Honda Moly 60 as an assembly lube when I did my cylinder head.  After an hour or so of run time the sprag stopped working.  I had to do a backspin to get the engine started with a full can of Seafoam, let it run for a half hour and did an oil change to get the moly out.


__________________________________________________
Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

15Back to top Go down    Re: Recommended oils?? on Mon Mar 14, 2016 7:35 pm

blaKey

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"Close this discussion as soon as possible,  please. It never ends well. 

Just buy something reputable and slippery and change it regularly; your bike will love it."

^ This.

I will add...use oils to suit the climate where you live and the temperature you will encounter before your next oil change.


__________________________________________________
Neil
K100RS 1986 RED!
K100RT 1987 (now nekkid with red bits)

Remember Rule No. 6
    

16Back to top Go down    Re: Recommended oils?? on Mon Mar 14, 2016 9:42 pm

Holister

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@Point-Seven-five wrote:
@92KK 84WW Olaf wrote:
@Point-Seven-five wrote:Just don't put molybdenum disulfide in the engine.  It will kill your sprag clutch.  DAMHIK


You have been warned.  Your oil can be too slippery.

No, it went in gearbox and final drive....
I saw that, and wanted to warn anybody who might think that putting it in the engine is a good idea.

I made the mistake of using Honda Moly 60 as an assembly lube when I did my cylinder head.  After an hour or so of run time the sprag stopped working.  I had to do a backspin to get the engine started with a full can of Seafoam, let it run for a half hour and did an oil change to get the moly out.

The Nulon Full Synthetic engine oil I use comes with moly already in it (Molybdenum Dithiocarbamate).


__________________________________________________
1988 K100RT     VIN No.  0094680
1989 K100RT     VIN No.  0097367 (naked)  
1996 K1100RS   VIN No.  0451808
     Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

17Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 4:29 am

charlie99

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@blaKey wrote:"Close this discussion as soon as possible,  please. It never ends well. 

Just buy something reputable and slippery and change it regularly; your bike will love it."

^ This.

I will add...use oils to suit the climate where you live and the temperature you will encounter before your next oil change.
agree Blakey


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

18Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 4:39 am

Chocolate

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Kaptain Holister wrote:Aww no!! Not another oil thread.... Someone had to say it 🤡

Engine Oil: Nulon Full Synthetic 10W40
I would recommend 20W50 this is better for hot temperatures, I don't think anybody will use the bike -20Celsius
GB/FD Oil:  Nulon Synthetic 75W90
this is the 30Years old BMW recommend oil, the modern equivalent would be SAE 75W-140 API GL-5

BMW do recommend synthetic engine oil and I think issues like sprag clutch problems are caused by using a mineral oil with low detergent.

Just my 5 cent

Cheers


__________________________________________________
Only a few activities make me experience my senses in a way motorcycle riding does, it is like swimming in the nude in a river.
K75 BA/1992 ABS, K75 BA/1991 noABS, Ducati, Mobylette M1/1973
Pictures: Me my bike and I
    

19Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 6:38 am

Reg

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Well everyday is a school day, thats religion, Politics and oils, not to be discussed..

well i ended up getting.....

A bottle of engine slippy stuff,
2 bottles of gear stuff,
1 new box full of sparks,
and some coloured stuff to keep it cool..

and stopped of for a pint of blackstuff on the way home..

But thanks for advice

    

20Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 9:38 am

Chocolate

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@Reg wrote:
and stopped of for a pint of blackstuff …
this is the correct stuff, I use the same :-) It runs perfect, but you have to fill up more often!

Cheers


__________________________________________________
Only a few activities make me experience my senses in a way motorcycle riding does, it is like swimming in the nude in a river.
K75 BA/1992 ABS, K75 BA/1991 noABS, Ducati, Mobylette M1/1973
Pictures: Me my bike and I
    

21Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 9:55 am

92KK 84WW Olaf

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@Chocolate wrote:
@Reg wrote:
and stopped of for a pint of blackstuff …
this is the correct stuff, I use the same :-) It runs perfect, but you have to fill up more often!

Cheers

Need to watch that black stuff. It can burn the exhaust valve and tailpipe if you run it too rich.


__________________________________________________
1992 K100LT 0193214 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 58,645 now 60,500 miles
    

22Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 10:02 am

Chocolate

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@92KK 84WW Olaf wrote:
@Chocolate wrote:
@Reg wrote:
and stopped of for a pint of blackstuff …
this is the correct stuff, I use the same :-) It runs perfect, but you have to fill up more often!

Cheers

Need to watch that black stuff. It can burn the exhaust valve and tailpipe if you run it too rich.

Hey Olaf!

Could you please post a picture of you tailpipe, I don't think BMW is still selling this model :-)

Cheers


__________________________________________________
Only a few activities make me experience my senses in a way motorcycle riding does, it is like swimming in the nude in a river.
K75 BA/1992 ABS, K75 BA/1991 noABS, Ducati, Mobylette M1/1973
Pictures: Me my bike and I
    

23Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 10:09 am

92KK 84WW Olaf

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You asked for this........


__________________________________________________
1992 K100LT 0193214 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 58,645 now 60,500 miles
    

24Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 10:10 am

92KK 84WW Olaf

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This one is the obsolete carb eater carburettor model....



__________________________________________________
1992 K100LT 0193214 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 58,645 now 60,500 miles
    

25Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 11:02 am

Chocolate

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Life time member


__________________________________________________
Only a few activities make me experience my senses in a way motorcycle riding does, it is like swimming in the nude in a river.
K75 BA/1992 ABS, K75 BA/1991 noABS, Ducati, Mobylette M1/1973
Pictures: Me my bike and I
    

26Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 11:28 am

Reg

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We have the proper black stuff here in the west, I hear tell there is some other copycat muck down south, that stuff will defo give you down pipe problems....

go on the corkbuys .....Smile

    

27Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 12:26 pm

92KK 84WW Olaf

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He looks well oiled anyways......

Look what this talk of oil started....!!

Just as well there was no mention of tyres.


__________________________________________________
1992 K100LT 0193214 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 58,645 now 60,500 miles
    

28Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 2:23 pm

Born Again Eccentric

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@92KK 84WW Olaf wrote:He looks well oiled anyways......

Look what this talk of oil started....!!

Just as well there was no mention of tyres.
Was so...Corkboy (post No.12) mentioned the T word. My simple mind was unable to contemplate the magnitude of an oil and tyre discussion in the same moment of consciousness so I failed safe and "disregarded the post" - until now. 

There was some talk of having a mass log on recently - perhaps it should be expanded to getting the most people on line ever and try and crash the www and overload the forum with the most different opinions on the choice of oil at the same time?


__________________________________________________
 
                              Paul  

"Heidi" K100LT 1991 (Grey) (VIN 0190172 Engine No. 104EB 2590 2213) - 5th owner. January 2014 (34,000 - 61,000 miles and counting....)
"Gretel" K100LT 1989 (Silver Grey) (VIN 0177324 Engine No. 104EA 2789 2211) - 4th+ owner. September 2015 (58,500miles and counting....). Cat C Insurance write-off rebuild Feb 17
"Donor" K100LT 1990 (Red)  (VIN 0178091 Engine No. 4489 2024) - 6th & final owner (crash write-off now donor bike).   June 2012 (73,000 miles) to November 2013 (89,500 miles)
    

29Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 2:54 pm

92KK 84WW Olaf

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Last Saturday week I wandered over to the local Honda dealer, happily located beside the local BMW dealer......

Parked outside the showroom was a rather nice K75 with a sprint fairing....so I eyed it up to see it was shod with Bridgestones....BT45 front and rear. Just like mine!

Tyres are an emotional subject. Sometimes even over inflated. Does this need a new tread?


__________________________________________________
1992 K100LT 0193214 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 58,645 now 60,500 miles
    

30Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 3:54 pm

Dai

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SHOOT HIM!!!!!!!!


__________________________________________________
'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

31Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 4:35 pm

Born Again Eccentric

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@Dai wrote:SHOOT HIM!!!!!!!!
A little harsh Dai...it's been a long day and he is obviously tyred and, whilst (lucky b'stard) he is not balding, he may still be losing his grip. Laughing


__________________________________________________
 
                              Paul  

"Heidi" K100LT 1991 (Grey) (VIN 0190172 Engine No. 104EB 2590 2213) - 5th owner. January 2014 (34,000 - 61,000 miles and counting....)
"Gretel" K100LT 1989 (Silver Grey) (VIN 0177324 Engine No. 104EA 2789 2211) - 4th+ owner. September 2015 (58,500miles and counting....). Cat C Insurance write-off rebuild Feb 17
"Donor" K100LT 1990 (Red)  (VIN 0178091 Engine No. 4489 2024) - 6th & final owner (crash write-off now donor bike).   June 2012 (73,000 miles) to November 2013 (89,500 miles)
    

32Back to top Go down    Re: Recommended oils?? on Tue Mar 15, 2016 5:08 pm

92KK 84WW Olaf

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Seems like I need to keep a low profile or be retyred with India rubber.

It's all Reg's doing...........


__________________________________________________
1992 K100LT 0193214 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 58,645 now 60,500 miles
    

33Back to top Go down    Re: Recommended oils?? on Wed Mar 16, 2016 1:22 am

Holister

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In my best written Irish accent.

Shocked I am aghast at the frivolity displayed on dis sacred Oil Tread. Have a torght for dose who worship the Golden Viscosity.....


__________________________________________________
1988 K100RT     VIN No.  0094680
1989 K100RT     VIN No.  0097367 (naked)  
1996 K1100RS   VIN No.  0451808
     Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

34Back to top Go down    Re: Recommended oils?? on Wed Mar 16, 2016 6:30 am

92KK 84WW Olaf

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Kaptain Holister wrote:In my best written Irish accent.

Shocked I am aghast at the frivolity displayed on dis sacred Oil Tread. Have a torght for dose who worship the Golden Viscosity.....

Leprachaun+1

See, he holds the golden viscosity in high esteem.


__________________________________________________
1992 K100LT 0193214 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 58,645 now 60,500 miles
    

35Back to top Go down    Re: Recommended oils?? on Wed Mar 16, 2016 6:43 am

88

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Kaptain Holister wrote:In my best written Irish accent.

Shocked I am aghast at the frivolity displayed on dis sacred Oil Tread. Have a torght for dose who worship the Golden Viscosity.....
 Jesus...Don't start the Larger debate again  Rolling Eyes


__________________________________________________
88....May contain nuts!

"The world is a book and those who do not travel read only one page." - St. Augustine from 1600 years ago & still true!

Bike: K100LT 1988. 0172363. AKA the Bullion Brick! Mods: k1100 screen and stands.
K1: 1990. 6374189. Custom Stealth Black paint.
    

36Back to top Go down    Re: Recommended oils?? on Wed Mar 16, 2016 6:47 am

92KK 84WW Olaf

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@88 wrote:
Kaptain Holister wrote:In my best written Irish accent.

Shocked I am aghast at the frivolity displayed on dis sacred Oil Tread. Have a torght for dose who worship the Golden Viscosity.....
 Jesus...Don't start the oil tyres Larger debate again  Rolling Eyes
Green Kangaroo Fixed that for you Will!!


__________________________________________________
1992 K100LT 0193214 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 89,150 miles
1997 K1100LT 58,645 now 60,500 miles
    

37Back to top Go down    Re: Recommended oils?? on Fri Mar 18, 2016 11:53 pm

Holister

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@Chocolate wrote:
Kaptain Holister wrote:Aww no!! Not another oil thread.... Someone had to say it 🤡

Engine Oil: Nulon Full Synthetic 10W40
I would recommend 20W50 this is better for hot temperatures, I don't think anybody will use the bike -20Celsius
I'd agree Choco, its maybe a little low in viscosity but the K is an over engineered machine with fine tolerances, polished contact surfaces, hardchromed crankshaft journals and nickasil bore linings etc. From what I've read it can handle a quality modified synthetic 10W40. Just my opinion. She's due for a change now and I'll be using same oil but in a 15W50

GB/FD Oil:  Nulon Synthetic 75W90
this is the 30Years old BMW recommend oil, the modern equivalent would be SAE 75W-140 API GL-5
75W140 gear oil is a much higher viscosity oil not suitable for general road use. Its used in drive trains under excessive load like trucks. This viscosity in a BMW drive train would produce higher than normal running temperatures with greater drag and a marginally lower power output. Bearings would suffer due to reduced oil flow imo. 75W90 is the correct oil to use

BMW do recommend synthetic engine oil and I think issues like sprag clutch problems are caused by using a mineral oil with low detergent.

Just my 5 cent

Cheers


__________________________________________________
1988 K100RT     VIN No.  0094680
1989 K100RT     VIN No.  0097367 (naked)  
1996 K1100RS   VIN No.  0451808
     Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

38Back to top Go down    Re: Recommended oils?? on Sat Mar 19, 2016 3:21 am

Chocolate

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Kaptain Holister wrote:
@Chocolate wrote:
Kaptain Holister wrote:Aww no!! Not another oil thread.... Someone had to say it 🤡

Engine Oil: Nulon Full Synthetic 10W40
I would recommend 20W50 this is better for hot temperatures, I don't think anybody will use the bike -20Celsius
I'd agree Choco, its maybe a little low in viscosity but the K is an over engineered machine with fine tolerances, polished contact surfaces, hardchromed crankshaft journals and nickasil bore linings etc. From what I've read it can handle a quality modified synthetic 10W40. Just my opinion. She's due for a change now and I'll be using same oil but in a 15W50
20W50, 10W50 or 10W50 is a question of temperature where we live. In the end they are all OK

GB/FD Oil:  Nulon Synthetic 75W90
this is the 30Years old BMW recommend oil, the modern equivalent would be SAE 75W-140 API GL-5
75W140 gear oil is a much higher viscosity oil not suitable for general road use. Its used in drive trains under excessive load like trucks. This viscosity in a BMW drive train would produce higher than normal running temperatures with greater drag and a marginally lower power output. Bearings would suffer due to reduced oil flow imo. 75W90 is the correct oil to use
I'm not sure with this, in the German forum they all recommend SAE 75W-140 API GL-5 as newer and better oil then the 30 years old BMW recommend 75W90.
BMW do recommend synthetic engine oil and I think issues like sprag clutch problems are caused by using a mineral oil with low detergent.

Just my 5 cent

Cheers

Hey Kaptain

But I fell you got a better knowledge about the oil then I have.
The German forum user use and swear on:
Motul 75W140
https://www.motul.com/system/product_descriptions/technical_data_sheets/108/Gear%20Competition%2075W140_GB.pdf
doesn't mean they are right :-)
I'm now a bit irritated, If I wouldn't have asked live would be easier.

Cheers


__________________________________________________
Only a few activities make me experience my senses in a way motorcycle riding does, it is like swimming in the nude in a river.
K75 BA/1992 ABS, K75 BA/1991 noABS, Ducati, Mobylette M1/1973
Pictures: Me my bike and I
    

39Back to top Go down    Re: Recommended oils?? on Sun Mar 20, 2016 8:54 pm

K75cster

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I think you are getting worried about the 75w, its the base oil used to flow around the gearbox, the index is the capacity to handle pressure, that is its capable of acting like 90weight in the heat of battle, so if the new stuff is indexed to be capable of handling the heat of battle all the way to 140, its nice but still going to flow like a 75 weight, just wont shrink form battle up till 140.


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Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

40Back to top Go down    Re: Recommended oils?? on Sun Mar 20, 2016 9:58 pm

Two Wheels Better

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In my dry clutch Beemers I use Castrol (or other when Castrol's not available) full synthetic 75W140 in the gearbox and final drive, have for years. It takes the heat from the catalyst, where equipped, doesn't leak out past seals and I've never had the dreaded final drive big bearing failure - knock on wood.

In the engines of those same bikes I use cheap and plentiful (about US$5 per quart) Mobil 1 full synthetic 15W50 year round. My very high mileage R1150RT doesn't burn a drop between oil changes when on roadtrips and about half a litre between changes in mainly stop 'n' go city or peak hour traffic during the heat of Summertime.


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'77 R75/7-1000cc, '87 K100RS, '93 K12 Big Block, '94 R100 Mystic, '03 K1200GT, '04 R1150RT, '06 K1200R, '07 K1200R & '09 K1300GT
    

41Back to top Go down    MoS2 or something...fairy dust! on Thu Oct 19, 2017 8:06 pm

Ace Handler

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Pardon my ignorance, please Question - I have never been formally introduced previously to the benefits of adding Molybdenum Disulphide to geared drives, but sounds like a miracle product!  Why isn't it a standard additive for final drive oils is the question (niche market!).

Canadian Tire has tubes of high pressure grease with 'some' MoS2 in it (how much doesn't say) and it was on sale.  But the thought of shooting grease into my gearbox/final drive didn't really seem like a good idea so I gave that a pass.  But I found this on eBay and it appears to be just straight Mo.  Will this work?  It's an awfully decent price I'm thinking...  Here's a pic of the item description, any and all inputs welcomed Smile 


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"The World is a Highway, and we are but merely Riders"
1992 K100RS Perlsilber 16v. VIN 6493830
    

42Back to top Go down    Re: Recommended oils?? on Thu Oct 19, 2017 9:27 pm

Point-Seven-five

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I'm not sure about using that straight molybdenum powder, especially since the particle size sounds too large. 

The stuff I use is Molybdenum disulfide in a 1.5 micron particle size. 

https://www.ebay.com/itm/Molybdenum-Disulfide-1-5-Micron-Powder-2-Ounces-99-Pure-SHIPS-FAST-/391442186584?hash=item5b23c5c158:g:ZhwAAOSwzgRWyBxe


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Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

43Back to top Go down    Re: Recommended oils?? on Fri Oct 20, 2017 9:24 am

jbt

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@Ace Handler wrote:Pardon my ignorance, please Question - I have never been formally introduced previously to the benefits of adding Molybdenum Disulphide to geared drives, but sounds like a miracle product!  Why isn't it a standard additive for final drive oils is the question (niche market!).
Because everything has already been discovered...
Molybdene may be un good lubricant, but it may also not match with the components of transmission, creating electrolytic reactions or modification of acidity that permit corrosion, often on pieces made of brass and bronze.
The micronised graphit used to be the fashion some years ago. Miracle product!
And it is indeed...in dry conditions. It's a miracle lubricant in locks, for example. Many garages used this powder in engines and transmission, with evident benefits at short term. Lubricant brands even sold oil with graphite (Antar molygraphite) .But at long terms, the graphit was pumping oil, making sort of pasta that stucks the oil conducts in engines, which failed.
An old mechanic impressed me with that sorcecer's magical powder. "Just add a small glass in your gearbox, you'll see, it will make it smooth and silent". And it dit.
But 2000 km later, it became worst than before, hard and noisy, all the seals were leaking. Hey, it's a super lubricant, so it even leads oil through the lips of the seals...(it depends a lot of the material of the seal)
When I opened my gear box to change the seals, not a single drop of oil could be drained. Removing the cover, I discovered that the powder had mixed with the oil and was plastered on the gearbox carter, but no oil was remaining at the bottom nor on the shafts.

Sorry, but there's no miracles in mechanics. Simply stick with the manual guide, you'll avoid problems.

    

44Back to top Go down    Re: Recommended oils?? on Fri Oct 20, 2017 10:51 am

BobT

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I used the powder in the oil on my, Wills (88), and Olafs gearboxes. About a teaspoon in the gear oil. It used to be uses in engine oil on this side of the Atlantic, it was called Molycote or Liquid Moly oil, and a few other trade names. When you put it in the gearbox, you can feel the difference within 100 kms.
It is not acidic and will not affect any components inside the gearbox. It is a great lubricant for anything under pressure, such as gears.
We used it in the aviation industry for many different things.
It is no longer used in engine oils, because modern fully synthetic oils are so good that they need nothing else.

    

45Back to top Go down    Vescosity? on Fri Oct 27, 2017 4:06 pm

flyinglow

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So why not a 10w-30 vs. 10w-40 or 20w-50?  Most cars are running 0w and 5w synthetic these days and are fully capable of 200,000 if maintained?   The K engines aren't running any hotter than the car engines?

    

46Back to top Go down    Re: Recommended oils?? on Fri Oct 27, 2017 4:48 pm

jbt

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They're not running hotter, but the viscosity depends of the oil pump capacity and the lubrication system.
It's not designed for a fluid oil, you won't reach the minimal oil pressure using a 10w30 and your engine won't like it.
There's no advantage for using a low viscosity index -below 20w50- unless you're riding under -10°Celsius (15°F). Who does?

    

47Back to top Go down    Re: Recommended oils?? on Fri Oct 27, 2017 5:31 pm

BobT

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@jbt wrote:There's no advantage for using a low viscosity index -below 20w50- unless you're riding under -10°Celsius (15°F). Who does?
Oh yes there is an advantage. In cold weather a 5w50 will circulate the engine much quicker than a 20w50 will at start up. when warm they will both be a 50 so the same.

    

48Back to top Go down    Re: Recommended oils?? on Sun Oct 29, 2017 10:02 am

Holister

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I use Nulon synthetic 10w50 which has a moly additive.
LiquiMoly and Molycote products are available in Oz as far as I know.


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1988 K100RT     VIN No.  0094680
1989 K100RT     VIN No.  0097367 (naked)  
1996 K1100RS   VIN No.  0451808
     Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

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