Fluid replacement in a car goes beyond oil changes and covers fluids that allow the transmission, radiator (coolant), and brakes to perform properly. These fluids need replacement in manufacturer-recommended service intervals, usually based on the vehicle’s accrued mileage. Sometimes, these replacements are prompted by a breakdown or repair.
Even when these things are running smoothly, it’s good to check the fluid levels for your brakes (see also brake lines) and radiator about every 20,000 miles on average. You could even throw a wiper-fluid check in there while you’re at it, although it’s not as critical to the vehicle’s operation as the others.
For transmission fluid replacement, the intervals stretch much further. Regular fluid replacement can vary between 30,000 and 90,000 miles depending on the vehicle model and transmission type (manual or automatic). Shifting and driving habits and towing demands can also shorten the duration between servicing.
A quick note about fluid replacement, whether for the brakes, coolant, or transmission, is that these fluids are not universal, and you should consult the owner’s manual and a qualified technician to find the correct formulations for your vehicle.
For general maintenance intervals for these areas and more, check out our Car Maintenance Guide.
Read Related Articles:
- When Do I Need to Change My Transmission Fluid?
- Car Maintenance Guide: Everything You Need to Know
- Do I Need a Coolant System Flush?
