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1Back to top Go down    Engine Oil Quick Check on Wed Sep 05, 2018 2:16 pm

DBRMN

DBRMN
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Just a quick check to see if this is the right stuff to put in my K100LT ABS, its 5 litres worth which is more than 4 quarts, its also 10W40 which I think is right.

https://www.eurocarparts.com/ecp/p/car-accessories/engine-oils-and-car-fluids/engineoils/10w40-engine-oil/?521776011&0&cc5_245

http://dbrmn.kforum-tech.com
    

2Back to top Go down    Re: Engine Oil Quick Check on Wed Sep 05, 2018 2:19 pm

Dai

Dai
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Some K's don't like semi-synth as it leaks passed the seals. I haven't had this problem, but others have. If you want to be absolutely safe:

https://www.halfords.com/motoring/engine-oils-fluids/engine-oil/halfords-classic-oil-20w50-5l

I tend to use this in preference to the semi-synth.


__________________________________________________
'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)
    

3Back to top Go down    Re: Engine Oil Quick Check on Wed Sep 05, 2018 2:30 pm

DBRMN

DBRMN
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@Dai wrote:Some K's don't like semi-synth as it leaks passed the seals. I haven't had this problem, but others have. If you want to be absolutely safe:

https://www.halfords.com/motoring/engine-oils-fluids/engine-oil/halfords-classic-oil-20w50-5l

I tend to use this in preference to the semi-synth.
and its fine that its not 10W40?

http://dbrmn.kforum-tech.com
    

4Back to top Go down    Re: Engine Oil Quick Check on Wed Sep 05, 2018 3:58 pm

Dai

Dai
Life time member
Life time member
Yes. It never gets cold enough in the UK to warrant the use of a 10-base oil. Now Germany... that's a different matter.


__________________________________________________
'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)
    

5Back to top Go down    Re: Engine Oil Quick Check on Wed Sep 05, 2018 4:48 pm

Snod Blatter

Snod Blatter
Life time member
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I have run the Triple QX and GSF's own Vetech brands of 10w40 and find them a bit on the thin side, I remember I once nipped into town on a hot day and half the sump disappeared..! Millers semi synth 10w40 was similar, but cheap Carlube 10w40 never got touched.

You can often get a really good deal from ECP or GSF, I got 20L of Vetech for £32.. So I stick with it, just keep an eye on the level. I'm currently using it in everything, wet clutches don't seem to be affected by it either - winner.

I'm also using Triple QX fully synth gear oil, 75w-90, and to be honest it seems utter pants - after ~7000 miles or so it was decidedly thin. I'll look elsewhere next time.


__________________________________________________
1989 K100RS SE ABS 8v  VIN: 0149214
Others: 1.5 x Honda CBX250RS-E, '94 CB250, '95 TRX850, '16 Z250SL
http://justbikethings.blogspot.co.uk/
    

6Back to top Go down    Re: Engine Oil Quick Check on Wed Sep 05, 2018 10:02 pm

Two Wheels Better

Two Wheels Better
Moderator
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@DBRMN wrote:
@Dai wrote:Some K's don't like semi-synth as it leaks passed the seals. I haven't had this problem, but others have. If you want to be absolutely safe:

https://www.halfords.com/motoring/engine-oils-fluids/engine-oil/halfords-classic-oil-20w50-5l

I tend to use this in preference to the semi-synth.
and its fine that its not 10W40?
I used 10W40 Down Undah for a while. No worries.


__________________________________________________

1987 K100RS, '89 K100 w/K1100RS engine, '93 Framed K11/K12 engine 'Big Block', '09 K1300GT, '07 K1200R, '95 R100 Mystic & '77 R75/7.

    

7Back to top Go down    Re: Engine Oil Quick Check on Thu Sep 06, 2018 12:28 pm

DBRMN

DBRMN
Platinum member
Platinum member
@Two Wheels Better wrote:
@DBRMN wrote:
@Dai wrote:Some K's don't like semi-synth as it leaks passed the seals. I haven't had this problem, but others have. If you want to be absolutely safe:

https://www.halfords.com/motoring/engine-oils-fluids/engine-oil/halfords-classic-oil-20w50-5l

I tend to use this in preference to the semi-synth.
and its fine that its not 10W40?
I used 10W40 Down Undah for a while. No worries.
Wow never realised it was so minimal the difference between them, this chart is very useful.

http://dbrmn.kforum-tech.com
    

8Back to top Go down    Re: Engine Oil Quick Check on Thu Sep 06, 2018 12:29 pm

DBRMN

DBRMN
Platinum member
Platinum member
@Snod Blatter wrote:I have run the Triple QX and GSF's own Vetech brands of 10w40 and find them a bit on the thin side, I remember I once nipped into town on a hot day and half the sump disappeared..! Millers semi synth 10w40 was similar, but cheap Carlube 10w40 never got touched.

You can often get a really good deal from ECP or GSF, I got 20L of Vetech for £32.. So I stick with it, just keep an eye on the level. I'm currently using it in everything, wet clutches don't seem to be affected by it either - winner.

I'm also using Triple QX fully synth gear oil, 75w-90, and to be honest it seems utter pants - after ~7000 miles or so it was decidedly thin. I'll look elsewhere next time.
So synth stuff is definitely a no go area. I think I'm just going to get some classic Engine Oil from Halfords, looks like a good idea.

http://dbrmn.kforum-tech.com
    

9Back to top Go down    Re: Engine Oil Quick Check on Thu Sep 06, 2018 12:45 pm

Two Wheels Better

Two Wheels Better
Moderator
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"Myth #3: Synthetic engine oils can wear down seals in an engine and cause leaks. This is an often-cited myth. In fact, if your seals and gaskets are in good condition,synthetic oil will not leak in your engineSynthetic oil has not been shown to deteriorate engine seals or gaskets."


Cenex Petroleum


Old seals or worn seals can lead to leaks, when using synthetic oils, but the oil doesn't cause them.



Last edited by Two Wheels Better on Thu Sep 06, 2018 12:47 pm; edited 1 time in total


__________________________________________________

1987 K100RS, '89 K100 w/K1100RS engine, '93 Framed K11/K12 engine 'Big Block', '09 K1300GT, '07 K1200R, '95 R100 Mystic & '77 R75/7.

    

10Back to top Go down    Re: Engine Oil Quick Check on Thu Sep 06, 2018 12:46 pm

DBRMN

DBRMN
Platinum member
Platinum member
@Two Wheels Better wrote:"Myth #3: Synthetic engine oils can wear down seals in an engine and cause leaks. This is an often-cited myth. In fact, if your seals and gaskets are in good condition,synthetic oil will not leak in your engineSynthetic oil has not been shown to deteriorate engine seals or gaskets."


Cenex Petroleum
Oh but if you have terrible seals it has more chance of seeping through?

http://dbrmn.kforum-tech.com
    

11Back to top Go down    Re: Engine Oil Quick Check on Thu Sep 06, 2018 1:08 pm

Two Wheels Better

Two Wheels Better
Moderator
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@DBRMN wrote:Oh but if you have terrible seals it has more chance of seeping through?
See my edited post just above.

My experience with this issue of oil leaks after using synth oils goes back to the '70s when synthetics were becoming popular, especially during the first and second energy crises. 

I was a curious lad, prone to reading Popular Mechanics, Popular Science, Road & Track, Autoweek, of many other magazines in the school library and at home. In those pages the subject was much discussed. My motorbikes got regular oil changes using traditional oil, but they were newer, of mid to late '70s vintage. When I finally tried synthetic oil I had no such issues, until I put synth gear oil and synth engine oil into my 1970 R60/5 with about 40,000 miles on the clock. This time, after a while, I got seepage on the shift lever seal, and in the front crank seal. So I went in search of the reason. It turns out manufacturers, in the late '70s, had begun to use a larger quantity of Buna N elastomers mixed in to the seal stock (which had been around since the '30s, invented by IG Farber & company) which allows for a greater heat range in rubber, greater resistance to petroleums, and a longer life due to flexibility, etc. A 1970 BMW motorbike still had the brittle, older seals throughout. Over time I ended up replacing those seals with newer materials and lo and behold, only a worn shaft, that even a good seal wouldn't work well on, had any seepage. 

So, in the 'early daze', and beyond, yes, there were some instances of leakage, but it was the rubber composition that was the issue. Synthetic oils simply highlighted where a product needed to be improved. I highly doubt there are any NOS (new old stock) seals of the old type that are viable forty years later even if kept in proper storage. 

Imagine if one major industry, inherently reliant on another industry, was producing a product its partner could not use successfully? 

Myths linger.


__________________________________________________

1987 K100RS, '89 K100 w/K1100RS engine, '93 Framed K11/K12 engine 'Big Block', '09 K1300GT, '07 K1200R, '95 R100 Mystic & '77 R75/7.

    

12Back to top Go down    Re: Engine Oil Quick Check on Thu Sep 06, 2018 4:29 pm

DBRMN

DBRMN
Platinum member
Platinum member
@Two Wheels Better wrote:
@DBRMN wrote:Oh but if you have terrible seals it has more chance of seeping through?
See my edited post just above.

My experience with this issue of oil leaks after using synth oils goes back to the '70s when synthetics were becoming popular, especially during the first and second energy crises. 

I was a curious lad, prone to reading Popular Mechanics, Popular Science, Road & Track, Autoweek, of many other magazines in the school library and at home. In those pages the subject was much discussed. My motorbikes got regular oil changes using traditional oil, but they were newer, of mid to late '70s vintage. When I finally tried synthetic oil I had no such issues, until I put synth gear oil and synth engine oil into my 1970 R60/5 with about 40,000 miles on the clock. This time, after a while, I got seepage on the shift lever seal, and in the front crank seal. So I went in search of the reason. It turns out manufacturers, in the late '70s, had begun to use a larger quantity of Buna N elastomers mixed in to the seal stock (which had been around since the '30s, invented by IG Farber & company) which allows for a greater heat range in rubber, greater resistance to petroleums, and a longer life due to flexibility, etc. A 1970 BMW motorbike still had the brittle, older seals throughout. Over time I ended up replacing those seals with newer materials and lo and behold, only a worn shaft, that even a good seal wouldn't work well on, had any seepage. 

So, in the 'early daze', and beyond, yes, there were some instances of leakage, but it was the rubber composition that was the issue. Synthetic oils simply highlighted where a product needed to be improved. I highly doubt there are any NOS (new old stock) seals of the old type that are viable forty years later even if kept in proper storage. 

Imagine if one major industry, inherently reliant on another industry, was producing a product its partner could not use successfully? 

Myths linger.
very helpful thank you

http://dbrmn.kforum-tech.com
    

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