Reply to "Engine Oil Testing Results"

a true racing oil is for sure not a good choice for a full-interval street driven car, but I suspect the VR-1 is somewhat of a hybrid 'suitable for racing' with a full additive package to make it safe in the crankcase for several thousand miles if the engine doesn't whip it to death (molecular shear)
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http://www.valvoline.com/produ...l/racing-motor-oil/6

"Formulated for race engines, but compatible with passenger vehicles too."
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http://www.valvoline.com/faqs/motor-oil/racing-oil/76

"What solutions does Valvoline offer to the zinc issue?

Valvoline offers two solutions to the zinc issue:

1.Valvoline VR1 Racing Oil: Contains 75% higher zinc than SM motor oil with a balanced additive package
designed to work in both racing and street-legal applications. This product will protect older style push-
rod and flat tappet engines. Valvoline provides this product in both multi and mono viscosity grades:
20w50, straight 50, 10w30, straight 30, straight 40, and straight 60.


2.Longer-Lasting Zinc/Phosphorus: Valvoline uses an advanced zinc/phosphorus additive that keeps higher
levels of phosphorus in the motor oil where it protects the engine instead of poisoning the catalytic
converter. Valvoline is the only brand offering this unique additive across its entire line of passenger
car motor oils including SynPower -- the only synthetic oil that offers this additive.

Which oil has more zinc/ZDDP: VR1 or "Not Street Legal" racing oil?


Valvoline VR1 Racing Oil contains .13 percent of zinc and .12 percent of phosphorus compared to the
Valvoline "Not Street Legal" Racing Oil which contains .14 percent of zinc and .13 percent of phosphorus."
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the Hooky Spooky 'not for use in blah blah blah motor vehicles operated on public highways' warning is likely a legal disclaimer ala your friendly E P A ?

I doubt Roush & Childress are too keen on a dry sump system full of semi-solids because they didn't drain while the oil was still hot, they don't make 1930's oil anymore