i have a 2004 yamaha raptor and i just bought a stage 1 hotcam and it the tips and tricks it says that you cant run sythetic oil. why is that and is n e one else running synthetic oil with a hot cam

 

synthetics are a LOT thinner and would not perform most likely

stick w/ yamalube

 

You need to use regular oil for Piston rings and cam break-ins, as the cam has a phospher coating (to burnish/polish away any old valve cap scratches, if there are any)... synthetic oils are too slippery for the "wear-in" to happen propery

 

Well said rstaw2Zs.
After the cam is broken in you can run syn oil if you like.

 

usually only during break-in can't you run synthetics....but....Polaris now puts Full Synthetic in all their Sportsmans....I have a new '05, will see how it does, would be interesting to pull it apart and check the seating of the rings, cams, etc....

 

Helluva first post. Welcome to the forums.[img]i/expressions/face-icon-small-smile.gif[/img]

 

Go here, sign up for the tips/secrets... lotsa good stuff!

http://www.mototuneusa.com/