Breakin oil?


3 replies to this topic
  • Yammer-Hammer

Posted March 15, 2014 - 04:35 PM

#1

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

  • grayracer513

Posted March 15, 2014 - 04:42 PM

#2

You asked this question last week: http://www.thumperta.../#entry11437541

 

How much does JGR want for the super secret formula break-in only oil, exactly?



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  • Procircuit386

Posted March 17, 2014 - 10:42 PM

#3

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)



  • grayracer513

Posted March 18, 2014 - 06:27 AM

#4

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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