GM says some oil use is normal. Here are its official limits for cars and trucks, plus the key checks dealers use to confirm ...

Add Yahoo as a preferred source to see more of our stories on Google. As engine standards change, the oil that protects them has to change too — especially for drivers buying new trucks in the next ...

Engine oil is crucial to making sure a motor vehicle runs properly and helps keep the engine working efficiently over time.

The next generation of heavy-duty engine oil specifications has been adopted by the American Petroleum Institute for 2027 ...

In the world of automotive engine oils, 0W-20 is one of the thinnest, though oils as thin as 0W-8 are now used. The 0W stands for 0-weight in winter, and the 20 stands for 20-weight when the oil is ...

Walk into any parts store and you'll see the rows of glossy bottles promising to stop engine wear, boost fuel economy, and make your old clunker run like it just rolled out of the factory. The auto ...

The oil in your engine can evaporate, but only under very specific — and extreme — operating conditions. These conditions occur when your engine is operating at very high temperatures, which can ...

Under normal circumstances, most modern engine oil and gasoline brands work fine on their own to keep your engine running smoothly. But there may be cases where even the best of them could use a ...

Keeping a combustion-engined car in shape requires some effort. Part of that is changing the motor oil and filter on a regular basis to lubricate the moving metal components and keep the engine in ...

Can stuck piston rings be restored without teardown? A 500,000-mile Valvoline engine test shows how deposit removal may ...

Love racing, but not a fan of the sport's carbon footprint? Idemitsu is hoping to bring that down a notch with its new Plantech Racing engine oil, which uses plant-based raw materials for more than 80 ...

A Portland 2024 Toyota Tacoma owner reports "metal sparkles" in his oil at 40,000 miles despite strict 5K-mile changes. Is ...