Chevron says its new Techron cleans GDI injectors better, plus new rewards make switching easier.

Going full-synthetic can mean better engine protection and cold-weather performance at a higher price, but it may not be a needed upgrade for all cars. Changing your own oil is cost-effective, but oil ...

Pulling the dipstick is easy. Reading it correctly is another story. Here's when to check, how to read the markings, and what ...