'91 R100GSPD Fork Oil

leafman60 · Oct 28, 2020

What is the informed consensus regarding front fork oil weight?? I read somewhere that some of the "experts" were recommending different oil weights for the left and right fork legs.

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20774 · Oct 28, 2020

Snowbum's info on the R100GSPD is on this page:

https://bmwmotorcycletech.info/front-fork-oils-amounts.htm

leafman60 · Oct 29, 2020

I'm going to try 15w in the left leg and 10w in the right.

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jhall · Oct 29, 2020

Is anyone here a fan of using ATF for fork oil?

ridesolo · Oct 29, 2020

jhall said:
Is anyone here a fan of using ATF for fork oil?

I've heard of it and I guess it works, but. the argument against I've always heard is that real fork oil isn't all that expensive so unless you have lots of excess ATF around why not just use real fork oil?

pglaves · Oct 29, 2020

ATF was fine back in the /5 forks where 3wt fork oil (hydraulic fluid) was specified and used. The damping in later forks was specified to take 7.5 wt fork oil. In any fork later than a /6 Airhead or so, ATF is too thin.

'91 R100GSPD Fork Oil

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