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#1 (permalink)

04-25-2011, 10:31 AM

Car Nut

CC Member

Join Date: Apr 2009

Location: Phoenix, az

Cobra Make, Engine:

Posts: 848

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Found an oil this weekend that should eliminate the need for Zinc/Phos additive. It is Valvoline VR-1 Racing oil with high zinc content. Actual numbers are .13 percent zinc and .14 percent phosphrous. O'Reilly regularly stocks it. (1300 ppm and 1400 ppm if I did my math right). It is available in 20w/50.

.12 percent or 1200 ppm seems to be the general concensus on how much you should have for a flat tappet motor.

Saves you money on not having to buy the additive in addition to the motor oil. Valvoline also makes the high zinc in a full synthetic blend Racing oil.

Happy Motoring

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