dlong
New member
I've had problems with oil seeping past the oil filler o-ring and filler cap, even though it has been replaced. I'd like to try a Viton o-ring, but unsure of the size needed. A Wolverine faucet washer (1 5/16 x 1 1/16 x 1/8) seems pretty close but won't be tested until the next ride. Anyone got the OEM specs? I believe the 27 x 3.2mm size listed in the MaxBMW fiche is incorrect. A 27mm o-ring will drop right through the opening.