We earn commissions from purchases you make using links in our articles. Learn more. Most drivers know that regular oil changes are important for keeping their vehicles performing at their peak, but ...

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.

Replacing your transmission fluid can be relatively inexpensive, depending on your vehicle type and whether you do it yourself or have it done by a professional. For manual transmissions, you can get ...