Pardon me - oil viscosity - I think you knew what I meant Steve, the viscosity of the oil, (am i wrong in what i stated?) anyways, I thought that the Bel Ray 20 - 50 I was using a few changes ago may have bogged up the sprague?? (it may have been 10 - 40W but i think i went for the higher viscosity.
the temps on KI are rarely below 10 deg when you are riding, worst is 2 - 4 deg on the coast and -1 or -2 middle inland, so my oil is probably too thick, maybe time to pul back a bit?
SAE is only the approved measure, so my understanding is that 20W - 50 means that it will work adequately at between -20 deg c in coldest conds (the 'W" or winter measurement and 50 (assume that must be close to 50 or 60 C in normal hot atmospheric conditions.
happy to eat sH**t here as well if im wrong too.
Azza
Azza.
