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