Hi guys. I just changed oil and oil filter on my VFR750F from 1988. Since I bought it 2 years ago, I've never had any problem with it. Now after oil and filter change, I did a 150km run in southern Sweden, and the clutch is sliding whenever I accelerate. So it's like, whenever I accelerate above 4-5k RPM (I think), it's like half a second of acceleration and then half a second of much less acceleration. It doesn't sound like engine is over-revving much. Does that make sense? There is a few pointers in the manual regarding clutch sliding, but it just seems coincidental, that this happens on my first proper ride after oil change. Not sure if it's worth sharing, but this is the first oil change I've done on the bike since I got it (yes I know, I should have done this every year). I spoke with a friend of mine, that I deem know a bit about MC and a bit older ones, and he said, that it could be the oil brand and the viscosity of it, that might be the case. That perhaps it's a bit too thin or the actual composition of the oil. Another thing: I actually did put on too much oil on the bike. Above the MAX on the pin when checking. I have after experienced this issue, tapped the excess oil from the bike. I haven't tried driving with that yet, but it was just to rule that out. So a few facts: Bike has ran 54k kilometres I don't know what oil or when it was last changed I put on 3,8 litres of Castrol 10-40 semisynthetic oil I hope someone has a few pointers on what I can do and perhaps whats wrong. Also, I was planning to go on a ride today: Will that be safe, as long as I don't push it to when it starts sliding? Thank you on beforehand! VFRF for life.