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Yammer-Hammer

Breakin oil?

4 posts in this topic

Im wondering what oil i should use to break in my freshly rebuilt 2002 yz426f piston and rings. What would be better, my regular amsoil 10w-40 full syn. Or like Joe Gibbs BR30 break in oil

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NEVER use full syn oil for break in or even semi syn. The oil will not let the piston rings set right. Use a cheap motor oil like Rotella 10W30. Change oil and oil filter every other ride. Do three oil changes or about 5-8 hours of riding, then switch to your Amsoil (I use there oil, its freakin great)

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NEVER use full syn oil for break in or even semi syn. The oil will not let the piston rings set right.

 

That, is simply a complete, total falsehood.  I haven't used anything but synthetic oil to break in any engine that I've either owned or built for a customer for over 30 years, and not one of them has failed to seat the rings, not one has used oil.

 

Absolute BS.

 

Do three oil changes or about 5-8 hours of riding, then switch to your Amsoil

If the rings aren't seated within the first 30 minutes, they aren't going to. 

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