Learn what gear oil is, how it differs from transmission fluid, and why using the right lubricant is crucial for your vehicle ...

However, the interactive nature of a manual transmission can produce additional stress for a car's or truck's gear-shifting ...

Just 2 percent of cars sold come with a manual transmission. Here's what caused the stick shift to go nearly extinct.

In our tests, we've found that in some cars a manual transmission can improve gas mileage by a significant 2 to 5 mpg, compared with an automatic, and can cut a car's price by $800 to $1,200.