Think your car is still in its youth? By oil manufacturers' definitions, it may already be "high mileage." But what does that mean?

High mileage oil sits in the same aisle as conventional and synthetic, but it promises something different: extra protection for engines that have already lived a long, hard life. I want to unpack ...

We may receive a commission on purchases made from links. If your vehicle is due for an oil change, the oil of choice is either synthetic or conventional motor oil. But if your car's odometer is over ...

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 ...

Yes, synthetic oil is better for most engines, offering superior protection, longer life, and performance compared to conventional oils.

Jeff Smith of Roadkill Garage pours in some Castrol Edge High Mileage oil into a 318 engine that could use it.

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 ...

My car is 8-years old and has about 165k km on the odometer. I got the car when it had about 100k km and I've been taking it to a local shop for oil changes ever since. (I bought a lifetime oil change ...