Checking your transmission fluid level can save you costly repairs to your transmission. Most cars should have their transmission fluid levels checked with the engine warm.

Transmission fluid should be checked at the transmission fluid dipstick. If you cannot locate this dipstick, consult your owner's manual. Withdraw the dipstick, wipe it clean with a lint free rag, re-insert it and examine the fluid level. It should be within the range specified on the stick and the color should be red, not brown. If the fluid is brown, check your owner's manual for the correct procedure as you may need to replace the fluid. Some cars require the fluid be replaced every 30,000 to 50,000 miles, others never.

If the fluid is simply low, then it is time to add more fluid. Make sure that you use the correct fluid for your car, as using the wrong kind of fluid can destroy your transmission. Also be careful when handling transmission fluid, as it is extremely toxic. Consult the fluid container for poison control guidelines.

To add transmission fluid to your car, use the transmission fluid fill tube. If you cannot locate the transmission fluid fill tube, consult your owner's manual. Add a very small amount at a time in order to allow the fluid to percolate down into the car, and then recheck the fluid level. Take care not to overfill the transmission as this can cause damage. When the fluid level is acceptable again, store any leftover transmission fluid in a safe place and enjoy your automobile.