The brand also makes well-regarded transmission fluids, additives, gear oils, and oil filters. Royal Purple's motor oils, most of which are fully synthetic, are known for their high quality ...

Although AMSOIL created the first synthetic oil to meet the American ... One of the oldest oil brands, Quaker State has been recognized for its years of positive branding and high-quality products ...

Read more: Popular Synthetic Oil Brands Ranked Worst To Best Though it's called synthetic, this variety of oil is from a crude oil base. The difference between synthetic and conventional oil lies ...

Synthetic oil used to be something only performance cars needed, but not anymore. Now it’s the manufacturer-recommended engine lubricant in many mainstream vehicles, such as the Subaru Forester ...

be assured that heavy-duty diesel engine oil brands and base oil types (conventional, synthetic blends or full synthetic) can be mixed without fear. One must be mindful of maintaining the correct ...