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toolboxchev · 01-08-2020, 02:09 AM

I will save you a bunch of time read this:https://sharena21.springcm.com/Publi...2-ac162d889bd1

Look specifically at this:

47. 10W30 Valvoline VR1 Conventional Racing Oil (silver bottle) = 103,505 psi
zinc = 1472 ppm
phosphorus = 1544 ppm
moly = 3 ppm
calcium = 2,707 ppm
TBN = 7.6

The main thing outside of the ZDDP is the high film strength. 103,505 PSI

01-08-2020, 02:09 AM	#18
toolboxchev Registered User Join Date: Jul 2015 Location: 2nd left past the stump on a dirt road. Posts: 2,629	Re: Are valve guide umbrellas really needed? I will save you a bunch of time read this:https://sharena21.springcm.com/Publi...2-ac162d889bd1 Look specifically at this: 47. 10W30 Valvoline VR1 Conventional Racing Oil (silver bottle) = 103,505 psi zinc = 1472 ppm phosphorus = 1544 ppm moly = 3 ppm calcium = 2,707 ppm TBN = 7.6 The main thing outside of the ZDDP is the high film strength. 103,505 PSI