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Posts Tagged: Kirkland Signature Synthetic Motor Oil

Kirkland Signature Synthetic Motor Oil

Kirkland Signature Synthetic Motor Oil — is it any good? Yes, Kirkland Signature Synthetic Motor Oil is a very good budget priced product from Costco. The product appears to be blended by Warren Oil Company a large independent oil blender. What is an oil blender? Not all big motor oil brands are made oil refiners. Valvoline, for example, does not operate a refinery yet they’re a major seller of synthetic motor oil. A blender purchases their base oil on the open market from one or more refineries and then adds … Read More


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