Look behind the scenes at the extensive testing involved for modern engine oils. Today’s best oils will have API SP, ILSAC GF ...

If your owner’s manual says 5W30, or 15W40 ... licensed oils carry the current API and ILSAC engine oil licenses, along with the GM dexos1 gasoline engine oil approval. Royal Purple’s ...

For example, the price difference between a five quart bottle of Superior Protection Full Synthetic 5w30 oil from Super Tech and a comparable product from Mobil 1 is almost $10. Walmart's best ...

The oil services group declared that it was still in takeover talks with Dubai-based suitor Sidara. Wood also said it remained in "constructive dialogue" with its lenders "regarding refinancing ...

Hot Shot's Secret says as a severe-duty diesel oil, the Green Diamond Fleet line is a replacement for any CF-4, CJ-4, CI-4 and CI-4 Plus specification oil. By David Sickels David Sickels is the Senior ...