Slickone
Senior Member
Except those are not opinions. Most are based on lab test results (or else many that say they're engine was quieter with PP). If you haven't compared both, instead of saying you would not recommend any other oil, if I were you, I would just mention that M1 has worked well for me.All personal opinion ^w^. I'll stick to what I know works, as will everyone else.
And imagine where science/tech would be without trying new things.
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