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Old 05/21/2018, 02:17 AM   #16
p51
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Thought this was an interesting thread about "wear testing" of high zinc motor oils...

http://www.chevelles.com/forums/13-p...more-oils.html

The two high zinc motor oils I see mentioned the most in vintage mustang (think "flat tappet cams") threads seem to be:
(1) Valvoline VR1 10W-30 (both synthetic and conventional versions)
(2) Mobil1 15W-50 (synthetic)

All three of these are mentioned/ranked in this thread (specifically, the second posting). Here is a cut-n-paste of those particular motor oils...

***********

7. 10W30 Valvoline VR1 Conventional Racing Oil (silver bottle) = 103,505 psi
zinc = 1472 ppm
phos = 1544 ppm
moly = 3 ppm

8. 10W30 Valvoline VR1 Synthetic Racing Oil, API SL (black bottle) = 101,139 psi
zinc = 1180 ppm
phos = 1112 ppm
moly = 162 ppm

68. 15W50 Mobil 1, API SN synthetic = 70,235 psi
zinc = 1,133 ppm
phos = 1,168 ppm
moly = 83 ppm

**************

I think that the guy that does this testing does it just as a hobby... I don't think that this is some sort of "official lab testing" so take the info for what it's worth.

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