Modern vehicles rely on a host of fluids to send us down the road. Some, like engine oil and coolant, are well-known, while others, like differential fluid, are less-familiar to average motorists.

Manuals are a dying breed in the modern car market. Especially in North America, most of the cars that are sold have an automatic transmission, but we're not here to talk about manuals vs. automatics.

Ever wondered how easily you switch gears using your car’s transmission? The transmission fluid is a lubricant for your vehicle's transmission system. It helps clean and protect the transmission from ...

Hydraulic oil ranks high among fluids with multi-function capability. True, for sheer utility, it can’t match olive oil, which through the centuries has been used as food, lubricant, fuel, medicine, ...

Your rear differential is one of the most unappreciated parts in your car or truck. It does what might be the hardest job of all of those components, multiplying torque from your transmission and ...