
Automaker data from the field suggests that Low-speed pre-ignition (LSPI) is still a problem. A LSPI test for used motor...

Oil color is not an indication of the lubricant's condition. Oil analysis is the only accurate way to know a...

You don't need to do anything special before you switch to synthetic oil after having used conventional oil.

You can use diesel oil in a gas engine provided the diesel oil meets the appropriate specifications and viscosity requirements.

Spring and fall constitute “oil-change season” for many, but that schedule is more tradition than a maintenance imperative.

Just because your oil has turned black doesn't mean it's time to change it.

While it's safe to mix synthetic and conventional oil since they're compatible, here's why it's best to avoid it.

Motor oil myths abound. Here are five of the most persistent along with our myth-busting facts.

Using a lighter winter oil weight when the temperature drops can improve cold starts and maximize wear protection at startup.

Synthetic blends and semi-synthetics both use a combination of conventional and synthetic base oils.