Penn Grade (Brad Penn) oil

tvt59 said
I use the Lucas 10w-30 in the race cars. If you believe that Zinc is good for a race engine. Lucas racing oil has the highest concentration that you can buy. It's over 3000 ppm. I use 5w-40 Rotella full syn in my Ram diesel.

I posted a video about this exact thing after I was called a liar and a bunch of other ****.

It’s in the Performance forum. It’s not that long. Worth watching if you want to make power and increase engine life.