Starting January 1, 2027, new heavy-duty diesel engines will hit the road. And when engines change, oil has to change with ...

GM Authority poll shows owners overwhelmingly want thicker 5W-30 or 0W-40 oil for next-gen V8s, citing durability over thin ...

January 1, 2027, will be the first license date for two new heavy-duty engine oil categories, if all goes as planned.

Look behind the scenes at the extensive testing involved for modern engine oils. Modern engine oils continue to decrease in ...

Preparing for EPA 2027? API’s new PC-12 spec (CL-4 and FB-4) introduces ultra-low viscosity 0W-20 oils and stricter emissions ...

Home mechanics have been pouring vegetable oil into engines for years, sometimes in the fuel tank, sometimes straight into ...

GM owners want thicker oil in the next-gen V8 due to reliability issues regarding thinner oil, which caused problems that led ...

How well does vegetable oil work as a motor oil substitute? The difference in viscosity between these two oils reveals why ...

Every DIY motorhead has an opinion on oil. Our absurd hot takes can range from pouring Walmart-brand diesel grade in every engine we own to speculation on oil “conspiracies,” such as European cars ...

A great deal of research and new technology have advanced the fields of oil lubrication and contamination through oil filters. If you still think (as many do), that “All oil filters do the same thing, ...

Wankel rotary engines, typically but not exclusively found in Mazdas, certainly lean on the "quirkier" side of modern powertrain systems, made quirkier because most rotary-powered cars on the road ...