Of the many automotive fluids that your car uses, one of the most well-known and important is engine oil. Most people ...

Oil is the lifeblood of an engine, and changing it regularly is a simple act of maintaining your car. Doing so will keep it running smoothly and to prevent sludge and debris from building up inside.

It's important to check your owner's manual to find out how frequently you should change your oil. The old standard of changing your car's oil every 3,000 miles might not apply. Your father or ...