Refilling the windshield washer fluid reservoir should be part of your weekly auto maintenance routine. In most cases, distilled water does the job well, but it's different if you live in places with ...

The average car has around 30,000 parts and many fluids are used to keep them running properly. The most important fluids are motor oil, transmission fluid, brake fluid, washer fluid and coolant.

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.