Diesel engines in trucks and some passenger vehicles can derate power and go into limp mode, and this can be caused by a ...

It doesn't matter if you have a hybrid or conventional gas-powered car, a good motor oil can make the difference between a long-lasting engine and a sputtery ride. Here's what you should look for when ...

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

Shannon Babb has been fined and placed on probation by World of Outlaws Late Model Series after failing a tire test during ...

Choosing the right engine oil and knowing when to change it can make all the difference in your car’s performance and longevity. From synthetic vs. conventional debates to matching viscosity grades ...

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

A pro explains how to change your oil at home in under an hour.