Fluids & Battery

Oil, coolant, brake fluid and keeping the battery alive.

Overhead view of an open engine bay showing several differently colored fluid reservoirs including the oil filler cap, coolant overflow tank, brake fluid reservoir and washer fluid bottle, caps with no readable text, natural light, realistic photography.

The 6 Car Fluids to Know: What They Do and How to Check Them

Learn the 6 car fluids every driver should know: engine oil, coolant, brake, transmission, power steering and washer fluid, plus how to check each safely.

9 min read