Mobil 1 racing 4t causing slippage?
Wondering if this is a problem oil for this motorcycle.
2001, 3rd owner, 31k on the clock. I've owned it since 20k and do 1k oil changes always using Valvoline motorcycle 10/40 conventional (blue bottle). Last oil change, wally world was out of the Valvoline so i bought this mobil 1 10/40 racing 4t motorcycle oil (liquid gold?). I do all maintenance on this bike and it is garage kept, clutch cable is and always has been adjusted properly.
The oil has been in the bike for about 1 month and 300 miles. Yesterday, I began getting slippage on cold engine only in all gears except 1st above 6k RPM.
This has happened 3 separate times (every time since being noticed), all during warmup (first 10 minutes) and all above 6k. It goes away and i cannot replicate the slippage once hot (grips tight).
I'm wondering if synthetic is too slick considering the weak springs in this bikes basket?
Are both conv/syn oils oem spec'd?
Anyone else experience this?
I'm actually tearing this bike down next week and doing a full restoration on it and have a new clutch with the tighter EBC springs (amongst a pile of other new parts). I've planned this after a 600 mile round trip to bike week and really dont want to start any part of the project before then.
Any tips? Oil swap back to conventional?
Thanks guys and gals.