Engine Oil??

[Chin_Chilla]

I recently had my 400EX bored out to a 440 with Wiseco 440 Piston, Namura Sleeve, and also installed a HotCams Stage 2 Cam. My problem is now when I start my bike it will run good for about 30-45 min then the oil tank starts to smoke. Obviously the engine is running hot. I got oversized oil tank and am wondering what type of motor oil I should use. Any advice would be appreciated. Thanks, Chin_Chilla.

iI would use spectro4 it has always worked good for me. you can find it almost any where they sell ATV oil.

I no a lot of people r going to tell u to run amsoil but I think it is way over rated.:devil: :devil: