Gear oil coats these gears with a thick film to prevent direct contact. Read more: Every Major Brand's High Mileage Motor Oil Ranked, Worst To Best Though often confused, gear oil and transmission ...

It's surprisingly easy to stick to motor oil options that are manufactured in the United States. Plenty of reputable brands ...

Given all the options for motor oil options out there, choosing the right oil for your car might seem like a daunting task. While there is a mountain of information about the various oil choices ...