Engine and fluids
Fluid checks
Coolant, brake, transmission, power steering and washer fluid checks you can complete in a driveway.
Typical interval: Monthly
A monthly fluid walkaround takes about ten minutes and catches most slow leaks long before they become roadside problems. Work with the engine cold and the vehicle parked on level ground so the reservoir markings mean something.
Color and smell matter as much as level. Coolant that has turned muddy, brake fluid that has gone dark, or transmission fluid with a scorched smell all point to service rather than a top-up.
Topping up is appropriate for washer fluid and, occasionally, coolant. A level that keeps dropping is a leak, and repeated top-ups only hide it.
What to check
- Coolant level at the reservoir marks, engine cold
- Brake fluid between minimum and maximum, cap sealed
- Transmission and power steering per your manual's method
- Washer fluid rated for your lowest expected temperature
Also worth knowing
- Checking levels on a cold engine
- Color and smell as early warning signs
- Topping up safely versus scheduling service
AutoLab Maintenance publishes general vehicle maintenance information. Our guides, checklists and reminders are informational only and do not replace your owner's manual or the judgment of a qualified technician. Always follow the manufacturer service schedule for your specific vehicle.