Checking all of your car’s key fluids takes less than ten minutes with the engine cold or recently cooled. The six fluids to check are engine oil, coolant, brake fluid, power steering fluid, ...

At a time when vehicle diagnostics can demand a computer science degree, being able to get some insight into your engine health with nothing but a rag and a bit of know-how can be downright refreshing ...

Contaminants can tell you if you have any engine coolant leaking into the cylinders, and how well your engine air filter and oil filters are working. Second, you want to check your oil’s health, to ...