Join Date: Sep 2017
Location: Newport, Oregon
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Why is Valvoline Modern Engine Oil considered better at preventing carbon buildup? It's not even a true synthetic motor oil but considered a synthetic blend. It contains the usual hydrotreated heavy paraffinic distillates, mineral oil and hydrotreated C20-C50 lubricating oils with a dash of zinc alkyl dithiophosphate (ZDDP) as an anti-wear additive (used in practically all engine oils).
A true synthetic oil doesn't contain mineral oil. Mineral oil is used to blend with the synthetic oils (hydrotreated distillates) to reduce the cost. Valvoline Modern Engine Oil is 5-10% mineral oil.
A product like Mobil 1 is a true, Group IV oil (synthetic) that contains no mineral oil.
Of course, these companies have proprietary additives in miniscule amounts that are not disclosed on the MSDS to protect trade secrets, so if there is some sort of additive that addresses carbon buildup, I can't determine what those additives might be that distinguishes the Valvoline product from other oils.
Marketing hype IMHO.
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