It’s junk I used to think oil is oil. Used to get new motor every year. 3.0 merc EFI. Ran merc religiously. Turn them back in with 500-600 hours. All were still plenty fresh. Good compression tight bearings still a lot of hours left in them.
In 2000 same motor but ran Wally oil 100% for a year. 520 hours and that poor motor was worn out. 88 lbs of compression bearings were sloppy. Tired motor.
Was it scientific? No But enough for me and anyone who’ll listen.
Pat Goff Marble Falls/Seadrift TX
I've spent most my life in the maintenance field and when it come to oils for automobiles I think their all pretty good but when it come to 2 strokes its a different story. Stick with synthetic's. Cleaner burning and less carbon build up .
Carbon is a killer for 2 strokes. With good oil, always run an additive to help control carbon, such as Mercury Quiklean. I've seen motor internals that did not use this product vs. ones that do. The difference is amazing.