Fluids
Oil, coolant, washer, and brake fluid — the five-minute checks that prevent the four-figure repairs, explained step by step with safety callouts.
How to Check Your Engine Oil
Low oil kills more engines than any other neglected fluid, and checking it takes five minutes with nothing more than a paper towel.
7 steps · 5 minHow to Change Your Engine Oil & Filter
An oil change is the most valuable DIY job on the car: about 45 minutes of work, and you know the right oil and filter actually went in.
11 steps · 45 minHow to Check and Top Off Coolant
Coolant does two jobs — it keeps the engine from overheating in summer and from freezing solid in winter — and checking it takes ten minutes with no tools at all.
5 steps · 10 minHow to Fill Windshield Washer Fluid
Washer fluid is the easiest maintenance item on the car — three minutes, one cap, no tools.
3 steps · 3 minHow to Check Brake Fluid
Brake fluid is the one fluid you never top off casually — but checking it takes ten minutes and tells you a lot: the level tracks pad wear, and the color tracks age.
5 steps · 10 minRelated warning lights
Oil Pressure Warning
Engine oil pressure has dropped dangerously low. Driving on can destroy the engine within minutes. What it means, whether you can drive, and what a fix usually costs.
Decode the lightEngine Temperature Warning
The engine is overheating. Continuing to drive can warp the cylinder head or blow the head gasket. What it means, whether you can drive, and what a fix usually costs.
Decode the lightWasher Fluid Low
The windshield washer reservoir is nearly empty. What it means, whether you can drive, and what a fix usually costs.
Decode the light