How Often Should I Change Transmission Fluid?

Adding transmission fluid to flush machine.

How often to change transmission fluid depends on your vehicle year, make and model, along with your driving habits. Get the details here.



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.



Common Fixes for a Transmission that Shifts Hard

Automatic transmission

An automatic transmission can shift hard, jerk or hesitate for a number of reasons. Here’s what to look for to keep your vehicle shifting smoothly.



More AMSOIL Products Available in the Award-Winning Easy-Pack

Sometimes an idea so great comes along it makes some wonder, “Why didn’t anyone think of this sooner?” Case in point: AMSOIL easy-packs.



Should I Change Fluid in a Filled-for-Life Transmission?

Automatic transmission

Filled-for-life transmissions and differentials are becoming more popular. But it’s best to change fluid in these components at least once. Here’s why.