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Czechia, Springfield
1 Level
753 Review
57 Karma

Review on AR9100 Friction Modifier - 1 Gallon Bottle For Treating Up To 128 Quarts Of Engine Oil by Dean Gomatham

Revainrating 5 out of 5

engines are quieter.

I noticed that my Harley, Powerstroke, and Mustang EcoBoost are quieter. Probably less friction. I send oil samples to a lab at each oil change, so I monitor my engines.

Pros
  • My truck runs and sounds different while running archoil. Smooths out idle, with more noticeable power.
Cons
  • Pure snake oil, no benefits whatsoever