November 14, 20232 yr Hi all live got a 2003 gas gas 280 , I’ve had the clutch replaced when I had the crank case bearing done about two weeks ago at a trial at the weekend after about a hour the clutch was slipping in all gears , the oil has no contamination , I have noticed that the clutch piston has some Oil seeping out and the oil is turning a black colour could this leak be what the slipping is ie not enough pressure to release it’s a formula clutch and have been told these are not good and to get a ajp mineral one as this is what should have been on it regards Michael
November 14, 20232 yr I would of swore the 2002 -3 pros came with ajp's with dot 4 . Either way both the m/c and lower seals need to be compatible. The lower clutch could have been replaced. Probably best to go with both set for mineral oil. Good luck.
November 14, 20232 yr Author Hi thanks it’s got a formula clutch lever and was told gas gas stopped using because they weren’t any good . Got a Ajp one coming Will give that a try , the oil in there is black so all signs showing it’s a duff piston and seal
November 14, 20232 yr Formula master cylinders only came on GG for one year and one year only, 2012. Worn leaky seals will never cause a clucth to slip though, drag yes Edited November 14, 20232 yr by faussy
November 18, 20232 yr Lever is adjusted to tight back it off so there is some freeplay so it can let fluid back into master cylinder
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