Originally Posted by Martin81

I goofed up a bit and put car oil in my tenere before winter storage. Figured any 10w-40 is just 10w-40...guess I was wrong. Looking at the car oil it says semi-synthetic plus that ominous "low friction" stuff. Damn.

To the point: I never drove the bike anywhere after the change. Simply let it idle a couple of minutes then removed battery. obviously I'll change the oil ASAP but do you think the clutch may have suffered already? I guess I'll notice in the spring but if so it would be easier to fix it now when the oil will be drained anyway.