
Originally Posted by
Hillclimber16v
One thing I'm sure of running in with no load at all is no good , you do need to get the piston rings to get pushed toward the cilinderwall.
The part about bending the peaks I find hard to believe, they wear off and grind the rings to a better seal I've been told and read in the past.
There was once a test from Yamaha I believe that compared two bikes , one easy on the throttle the other warm up and 3/4 open cool down
Warm up again 100%. resulted in better performance and less oil consumpion.
In my own experiance 10W40 good quality does the job no need for expensive high grade oils and lost of marketing to pay for.
I won't say these higer grade don't do the job but I've never had a single problem with my 10W40 oils in the 14 years of competition experiance.