In May of 2011, we ran a story about a small company seeking backers for an innovative do-it-yourself device engineered to measure the level of contaminants in a vehicle's motor oil. Armed with ...

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 ...

Such competition, of course, inspires questions of whether O'Reilly's in-house motor oil is any good ... marks from most ...

New EPA 2027 emissions rules also mean new diesel engine oil specs. A new generation of heavy-duty engine oils will feature ...

While there are other nuances to motor oil classifications that need to be understood before changing or topping off the oil in your car's engine, one of the first things to address is the ...

Performing regular oil changes in your 6.7L Cummins-powered Ram truck is a good way to extend the diesel engine's lifespan past the 300,000-mile mark. Changing the engine oil in your truck ...