I asked them the differences in Valvoline and Napa oils and the base oils in them and Synpower and I got this back.
Quote:
These two products (Valvoline & Napa) are indeed produced by Ashland, but are not the exact same in formulation. The base oils are the same for each (Group II for conventional & mixture of Group III, IV, and V for synthetic), but the additive package is a higher quality in the Valvoline branded formula, simply due to the testing requirements the Valvoline oils have to meet, for more strenuous applications such as European vehicles. The two products are very high in quality, including the Napa branded, but we do formulate the Valvoline oils a little better for specified use, which has in turn gave us our top of the line name.
I like Synpower more now.
Quote:
These two products (Valvoline & Napa) are indeed produced by Ashland, but are not the exact same in formulation. The base oils are the same for each (Group II for conventional & mixture of Group III, IV, and V for synthetic), but the additive package is a higher quality in the Valvoline branded formula, simply due to the testing requirements the Valvoline oils have to meet, for more strenuous applications such as European vehicles. The two products are very high in quality, including the Napa branded, but we do formulate the Valvoline oils a little better for specified use, which has in turn gave us our top of the line name.
I like Synpower more now.