What Motor Oil is Best for Winter? (And Other Cold-Weather Questions)

Car driving in snow during winter

Synthetics are a better choice when looking for a winter motor oil. They remain fluid in cold weather to ease cold starts and improve wear protection.



Manual Transmission Fluid & Automatic Transmission Fluid: What’s the Difference?

Manual vs automatic transmission fluid

Even with manual transmissions on the endangered species list, questions about automatic vs. manual transmission fluid still arise.



What is the Best Transmission Fluid?

Pouring AMSOIL ATF into truck.

AMSOIL Signature Series Synthetic ATF excels at fighting heat and protecting gears and clutch plates, as demonstrated in severe testing.



What is Transmission Fluid?

Ford Mustang on the road with an "Easy-Pack" of AMSOIL Automatic Transmission Fluid

Transmission fluid is a lubricant formulated to protect your vehicle’s transmission gears and clutch packs while enabling smooth, crisp shifts.



What Kind of Transmission Fluid Do I Need?

What kind of transmission fluid do I need?

We provide all the info you need to find the right kind of transmission fluid for your vehicle. Plus, find out how to check transmission fluid.



8 Overlooked Vehicle-Maintenance Services

Vehicle maintenance

These often-overlooked vehicle-maintenance practices can not only help avoid expensive repairs, they can boost performance.