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Here we go again....
My .02 Valvoline VR1 20W50 (Search ZDDP/ Zinc in the forum/ google)
My .02 Valvoline VR1 is a full synthetic racing oil and it may have higher Zinc but it has few if any detergents. Street cars need detergents! It's a very good dedicated track car oil but not for street use.
Brad Penn 20W-50 is a semi-synthetic with a very high Zinc content and the correct detergents for a street driven car. Its ideal for our cars in every way.
Not saying your wrong, just clarifying to the op the VR1 is a racing oil.