How to Check Transmission Fluid: Complete Guide for All Vehicles

Mechanic checking automatic transmission fluid with a dipstick in a car engine bay.

Check transmission fluid with the engine running and at operating temperature on level ground. Pull the dipstick, wipe it clean, reinsert, and read the level. Healthy fluid appears bright red. Sealed transmissions need special procedures or professional help. Always use the correct ATF type for your vehicle. What You Will Learn in This Guide You … Read more