Changing your vehicle's transmission fluid is vital for it to perform at its best. If you want to skip a trip to the mechanic, here's how to do it yourself.

Even though fewer cars offer manual transmissions, it’s still a useful — and fun — skill to know. Our instructional video will get you going.

Changing your vehicle's transmission fluid is vital for it to perform at its best. If you want to skip a trip to the mechanic, here's how to do it yourself.