New oil additive saves 2% on gas

[bruce381]

there is chart some where showing HP loss due to friction, heat, combustion, fuel etc. compared to fuel mileage or lack of.

And I thought the place where the least amount of fuel mileage improvement can be was engine friction reduction.

 

[Astro14]

Folks, if this topic interests you, please start a new thread. This one originated in 2014...