BMW K bikes (Bricks)

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1Back to top Go down    Gearbox oil on Thu Aug 29, 2013 3:25 pm

klamityboy

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One of the resources in the download section, the BMW K100RT Routine Maintenance Manual, indicates that the amount of gear oil required is 850cc +50cc. Is the +50cc the amount between the min and max when checked with the dipstick/wrench? Also, I have seen recommendations online for either 75w90 and 75w140. Any thoughts as to which is best? When making a recommendation on weight of oil, I should mention it is coming to winter here and I will be driving all year. Winter gets to down to +1 or +2 degrees C. Any colder than that and the roads are too slippery to ride.

Thanks in advance,


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Klamityboy
1991 K75RT-P

Model Description: K 75RT
Market: Europe
Type: 0565
E-Code: K569
Engine: 3_ZYL - 0,70l (55kW)
Transmission: Manual
Body Color: Polizeiweiss
Production Date: 30.08.1990
    

2Back to top Go down    Re: Gearbox oil on Thu Aug 29, 2013 3:33 pm

ungaas

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I am using the 75/140 synthetic, our temps. may not dip as much as yours do but the oil had been recommended by some on the Flyingbrck.de website, it seems as they do experience similar temps. as yourself.
So far after 3 years I have not experienced any problems with the oil, to me the box is a little quieter.

Hope this helps


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88 K100 Unfaired 0033026

92 K1100RT 6455097
    

3Back to top Go down    Re: Gearbox oil on Thu Aug 29, 2013 3:36 pm

klamityboy

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@ungaas wrote:I am using the 75/140 synthetic, our temps. may not dip as much as yours do but the oil had been recommended by some on the Flyingbrck.de website, it seems as they do experience similar temps. as yourself.
So far after 3 years I have not experienced any problems with the oil, to me the box is a little quieter.

Hope this helps
Thanks. That helps a lot.Smile


__________________________________________________
Klamityboy
1991 K75RT-P

Model Description: K 75RT
Market: Europe
Type: 0565
E-Code: K569
Engine: 3_ZYL - 0,70l (55kW)
Transmission: Manual
Body Color: Polizeiweiss
Production Date: 30.08.1990
    

4Back to top Go down    Re: Gearbox oil on Thu Aug 29, 2013 8:27 pm

AJ.Valente

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Check around, there are other threads on the subject of gearbox oil.

I had originally used a Valvoline 70w-90w and after about 300 miles began to experience mis-shifts. Have switched to the Castrol and it's been smooth sailing ever since.

Castrol is even recommended above the much-vaulted Redline oil, so if you can get it up North where you're at then that's the way to go. :arrow:

    

5Back to top Go down    Re: Gearbox oil on Fri Aug 30, 2013 12:29 pm

japuentes

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Hi there, I tried the 75/140 synthetic, but had trouble with the seals, returned to the old fashioned original spec, so far so good

Best regards

JAP


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1988 K100RS SE/ABS
    

6Back to top Go down    Re: Gearbox oil on Fri Aug 30, 2013 6:05 pm

klamityboy

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@japuentes wrote:Hi there, I tried the 75/140 synthetic, but had trouble with the seals, returned to the old fashioned original spec, so far so good

Best regards

JAP
In my reading on the net is seems there is some suggestion that pre-91 bikes have a problem with synthetic and post-91 seem fine with synthetic. Where does it leak out? Was it simply a matter of switching back to non-synthetic or was more involved?


__________________________________________________
Klamityboy
1991 K75RT-P

Model Description: K 75RT
Market: Europe
Type: 0565
E-Code: K569
Engine: 3_ZYL - 0,70l (55kW)
Transmission: Manual
Body Color: Polizeiweiss
Production Date: 30.08.1990
    

7Back to top Go down    Re: Gearbox oil on Fri Aug 30, 2013 7:57 pm

K-BIKE


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Forget the synthetics cause leaks that may have been true when they were first introduced some 20 years ago but not nowadays it is an urban legend.
Regards,
K-BIKE

    

8Back to top Go down    Re: Gearbox oil on Fri Aug 30, 2013 8:05 pm

japuentes

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Hi, it was a small leak, you could feel the oil by the test hole and it would take a couple of weeks to form a drop. I drained the box filled and flushed with mineral oil and filled again.
Best regards.
JAP


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1988 K100RS SE/ABS
    

9Back to top Go down    Re: Gearbox oil on Fri Aug 30, 2013 11:20 pm

klamityboy

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@japuentes wrote:Hi, it was a small leak, you could feel the oil by the test hole and it would take a couple of weeks to form a drop. I drained the box filled and flushed with mineral oil and filled again.
Best regards.
JAP
Well went to 4 places in town for gearbox oil. Only two available were Lucas Oil 70w90 and Bardahl 80w90 at the local dealer. Both were Dino. Went with the 80w90.


__________________________________________________
Klamityboy
1991 K75RT-P

Model Description: K 75RT
Market: Europe
Type: 0565
E-Code: K569
Engine: 3_ZYL - 0,70l (55kW)
Transmission: Manual
Body Color: Polizeiweiss
Production Date: 30.08.1990
    

10Back to top Go down    Re: Gearbox oil on Sat Aug 31, 2013 12:00 am

RicK G

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I have been running Shell mineral oils in all my machinery for the last 30 years or more in some cases. I have run them in very dusty and dirty conditions, raced in many forms done probably over a million miles and have never had a failure due to oil in all that time. Had a few due to lack of oil but not the oil itself and for the on road machines have had only 2 or 3 failures in any form.
As with anything else its regular maintenance that pays.
Synthetic oil has many good properties but only ever stands out in extreme circumstances like endurance racing and where you are running the engine and drivetrain on the edge.
For riding and driving in everyday circumstances that 99.99% of people experience the properties that makes synthetic oils so much better are never experienced and using them just gives you a feel good moment that you are doing the absolute best for your fine bit of machinery while you throw money down the drain and make the oil companies richer.
Use good quality mineral oil and put the extra $30 that you save into fuel and enjoy a 300km trip on the bike.



Last edited by RicK G on Sat Aug 31, 2013 2:43 am; edited 1 time in total (Reason for editing : I meant 30 years not 3 years)


__________________________________________________
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
    

11Back to top Go down    Re: Gearbox oil on Sat Aug 31, 2013 2:29 am

klamityboy

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V
@RicK G wrote:I have been running Shell mineral oils in all my machinery for the last 3 years or more in some cases. I have run them in very dusty and dirty conditions, raced in many forms done probably over a million miles and have never had a failure due to oil in all that time. Had a few due to lack of oil but not the oil itself and for the on road machines have had only 2 or 3 failures in any form.
As with anything else its regular maintenance that pays.
Synthetic oil has many good properties but only ever stands out in extreme circumstances like endurance racing and where you are running the engine and drivetrain on the edge.
For riding and driving in everyday circumstances that 99.99% of people experience the properties that makes synthetic oils so much better are never experienced and using them just gives you a feel good moment that you are doing the absolute best for your fine bit of machinery while you throw money down the drain and make the oil companies richer.
Use good quality mineral oil and put the extra $30 that you save into fuel and enjoy a 300km trip on the bike.
Thanks Rick


__________________________________________________
Klamityboy
1991 K75RT-P

Model Description: K 75RT
Market: Europe
Type: 0565
E-Code: K569
Engine: 3_ZYL - 0,70l (55kW)
Transmission: Manual
Body Color: Polizeiweiss
Production Date: 30.08.1990
    

12Back to top Go down    Re: Gearbox oil on Sat Aug 31, 2013 1:30 pm

japuentes

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Hi there, in my opinion Rick just nailed it.

Best regards

JAP


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1988 K100RS SE/ABS
    

13Back to top Go down    Re: Gearbox oil on Tue Sep 03, 2013 1:32 pm

klamityboy

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Well changed the gearbox oil and final drive oil. New crush washers to be safe. Small amount of particulate on the magnetic plugs. Will probably upgrade to the stronger magnet versions from Beemer Boneyard next time. The only hitch was inadvertently moving the tinfoil I had carefully placed to ensure the centre stand was not covered in oil. Noticed it when about 500ml was pooling on the garage floor. Doh!!!!

Any suggestions for a cleaner to be used in the garage for small spills of gas/oil?


__________________________________________________
Klamityboy
1991 K75RT-P

Model Description: K 75RT
Market: Europe
Type: 0565
E-Code: K569
Engine: 3_ZYL - 0,70l (55kW)
Transmission: Manual
Body Color: Polizeiweiss
Production Date: 30.08.1990
    

14Back to top Go down    Re: Gearbox oil on Tue Sep 03, 2013 1:54 pm

charlie99

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kitty litter


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

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

15Back to top Go down    Re: Gearbox oil on Tue Sep 03, 2013 2:01 pm

klamityboy

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@charlie99 wrote:kitty litter
Thanks. I did that.

I used to take my bike to an independent mechanic who mainly worked on R-series and Harleys. He used to have a liquid that he would spray on parts during oil changes etc. I presume that it was some kind of de-greaser or soap solution. It was in a tin with a pump to pressurize the dispenser. Unfortunately, he has moved away and I cannot enquire.


__________________________________________________
Klamityboy
1991 K75RT-P

Model Description: K 75RT
Market: Europe
Type: 0565
E-Code: K569
Engine: 3_ZYL - 0,70l (55kW)
Transmission: Manual
Body Color: Polizeiweiss
Production Date: 30.08.1990
    

16Back to top Go down    OIL IN GARAGE FLOOR on Tue Sep 03, 2013 3:46 pm

Gordon Smith

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Tried Fracking ---that didn't work either.SadRolling Eyes

    

17Back to top Go down    Re: Gearbox oil on Tue Sep 03, 2013 5:08 pm

ungaas

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Jeyes Fluid - excellent degreaser


__________________________________________________
88 K100 Unfaired 0033026

92 K1100RT 6455097
    

18Back to top Go down    Re: Gearbox oil on Tue Sep 03, 2013 7:43 pm

japuentes

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Hi there, around here we use kerosene, but I know a couple of guys who uses gasoline.
There is also a, nonflammable, environmentally friendly, canned foam, by the brand cardoc but it requires a lot of elbowgine to work so I favor the kero.
If the oil stained floor is porous then perhaps a carpet is in order
Best regards.

JAP


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1988 K100RS SE/ABS
    

19Back to top Go down    Re: Gearbox oil on Tue Sep 03, 2013 8:45 pm

rosskko

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@japuentes wrote:Hi there, around here we use kerosene, but I know a couple of guys who uses gasoline.
There is also a, nonflammable, environmentally friendly, canned foam, by the brand cardoc but it requires a lot of elbowgine to work so I favor the kero.
If the oil stained floor is porous then perhaps a carpet is in order
Best regards.

JAP
I worked at a garage and had to clean the oil up with kero and a broom. Followed by petrol and a broom. Followed by detergent and a hose.
Not always possible in a home environment, but it did work well.


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1986 K100RT VIN 0093801K100RT with summer fairing for a northern visitor

Basic/2 6308802K100CJ05/1988

K1100RS 0194321
    

20Back to top Go down    Re: Gearbox oil on Tue Sep 03, 2013 8:50 pm

RicK G

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When Charlie and I were taking the cylinder heads off a few weeks ago some a heap of black oil spilled on the floor so I used a spraycan of degreaser and kitty litter and it is now the cleanest bit of the floor.


__________________________________________________
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
    

21Back to top Go down    Re: Gearbox oil on Sun Jan 12, 2014 3:17 am

klompy the grey brick

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Just changed Final drive and gearbox oil....easy peasy and the difference to gear change is amazing...no missed changes false neutrals and may even be quieter....


managed to not lubricated the centre stand springs by warping a funnel with the plug almost out.....undo by finger.
and by the way on special at Super cheap at the moment...$30 ish.....Rossco want yours done I have some left over as it only took 850ml and 260ml.


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KKlompy
1984 K100RS Silver VIN 0019026 Mitt eine Staintune Zorst.
1997 K1100LT Dark Grey VIN WB1052600W0237453.

Chassis number0019026
Vehicle code0503
SeriesK589
ModelK 100 RS 83 (0502 ( 0503 )
Body typeK 100 RS 83 (0502
Catalog modelECE
Production date1984 / 07
Engine0513)




    

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