Hey Oil Gurus...Prad Penn vs Valvoline VR1 Racing

[HammerDown]

Brad Penn's 40 or 50 wt wt
Zinc % 0.150
Phosphorus % 0.140

Valvoline VR1 Racing 40 or 50 wt...?

 

[KA426]

I use the Penn Grade 1 40 wt. Can't beat it!

 

[HammerDown]

Originally Posted By: KA426
I use the Penn Grade 1 40 wt. Can't beat it!

"can't beat it"...heck I live in SE Pa and I can't find it!

Mail order oil...that kinds sucks.

 

[aquariuscsm]

I`m using Valvoline VR1 20W50 right now and my car really seems to love it. As a matter of fact,I`m getting ready to get out and run some errands and I`ll probably pick up a few quarts to have on hand for my next up and coming oci.

 

[HammerDown]

Originally Posted By: aquariuscsm
I`m using Valvoline VR1 20W50 right now and my car really seems to love it. As a matter of fact,I`m getting ready to get out and run some errands and I`ll probably pick up a few quarts to have on hand for my next up and coming oci.

My application would be for a BBC Jet Boat that's under extreme engine loads all the time.
VR1 is good oil but their 20/50 didn't fare so well in my Jet Boat under constant engine loads. My research shows for a flat tappet cam engine like mine and how it's used, every little bit more of Zinc and phosphorous is a plus.
In fact, Brad Penn is the well respected old green Kendall formula

Now...Valvoline's "off road"-racing oil has the good stuff but it's only ment to be run for 500 miles then dumped.

 

[Drew99GT]

Per data sheets, VR-1 and Brad Penn have essentially identical zinc levels.

 

[HammerDown]

Originally Posted By: Drew99GT
Per data sheets, VR-1 and Brad Penn have essentially identical zinc levels.

VR1...
zinc 1300 PPM
phosphorus 1200 ppm

Brad Penn...
zinc 1500 ppm
phosphorus 1400 ppm

Would every little bit extra count in a heavy load, high rpm flat tappet cam engine?