CLASS RACER FORUM - Penn vs Valvoline test results..Ed Wright

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Re: Penn vs Valvoline test results..Ed Wright

Quote:

Originally Posted by Myron Piatek (Post 580710)

It's my understanding that multi-viscosity oils get circulated faster on start-up when it's cold, which helps protect sooner and reduce wear. I also read some time ago that multi-viscosity oils make more HP, but I don't recall why. It might be that drag engine oil don't usually reach "normal" operating temperatures, if I understand viscosity numbers correctly. (i.e.: 10w-30 - 10w=cold, 30=hot.

Valvoline says that straight weight oils are usually recommended for smaller and older engines.

5th question down:

https://www.valvoline.com/about-us/f...-viscosity-faq

I'll do one more round with straight 30 and then switch to 10-30 to see if my test results move any.

Re: Penn vs Valvoline test results..Ed Wright

This is a little off topic... but still oil related...
I've been hearing of some guys finding power on the dyno using some of the new oils designed for older Hi mileage engines. They say it is because the rings seal better. Anyone have any experience with that?