Motor oil has quietly become one of the most important choices car owners make, especially as vehicles routinely cross ...

Chevron Products Co. has introduced two new synthetic transmission fluids for heavy-duty trucks equipped with manual transmissions: Chevron Delo Synthetic Transmission Fluid SAE 50 and Texaco Syn-Star ...

Full synthetic and high-mileage oils offer different benefits for different people. Here's which one you should use, as well ...

This article was updated March 6, 2023. It was originally published Aug. 1, 2001. Gears—even plastic ones—need to be lubricated if engineers are going to coax the best performance out of them. In the ...

The MarketWatch News Department was not involved in the creation of this content. New viscosity joins AMSOIL SEVERE GEAR(R) 100% Synthetic Gear Lube family to protect the hardest-working applications.

We may receive a commission on purchases made from links. Synthetic motor oils have been around for a while now, longer than most gearheads realize. The first synthetic hydrocarbon oils were created ...

Walk into most quick-lube shops and you'll walk out with a sticker telling you to return in three months or 3,000 miles. It's ...