DannyP posted:I think 40,000 miles of experience with this particular motor, great compression and low wear, along with a healthy oil analysis says I'm good.
Been running 10w40 for 4 years now. BTW, I started using Valvoline 4 stroke Motorcycle oil about 5 or 6 years ago, first 20w50, then 10w40. It's available at the chain stores and has ZDDP etc. Sometimes it is on sale for half off but is usually $6 a quart,
I am a SCIENTIST(3 degrees, one in PHYSICS/CHEMISTRY) and rely on hard research BUT have an appreciation for anecdotal evidence! When you SUGGEST low wear....are you tearing down your motor and do you "MIC" (micrometer) your cam/crank/etc., to actually measure wear AND THEN do it every 10,000 miles and compare to another SAME motor using 20-50 to COMPARE WEAR? What might be the parameters measured for "HEALTHY OIL ANALYSIS"?
I have NO doubt that your motor is fine.....but hard research is a VALUABLE asset and stands the test of time until someone DISPROVES/CONTRADICTS with a quality study. I know that JAKE does hard research and I value his opinions. IT may very well be that 10W-40 in your hands does just as well or POSSIBLY better for that matter, but SHOW ME THE MONEY(LOL)
. No argument from me.....just looking for measurables...