Filler plug holes on a manual gearbox may be used to check the fluid level. Insert your finger into the filler plug h*** and check whether you receive any fluid fileslib. What gear does a manual transmission need to be in to check the fluid level? Leave car in neutral or park . Let engine warm up and continue to run throughout operation unless vehicle's owner's manual says otherwise. (Be aware that some automatic transmission fluid levels are checked with the engine off. Check owner's manual.) If the fluid is red, clear and free of particles, the next step is to check the fluid level. Clean the dipstick with a fresh, lint free rag, reinsert it and
(Be aware that some automatic transmission fluid levels are checked with the engine off. Check owner's manual.) Locate automatic transmission fluid dipstick
Do you check transmission fluid while the car is running? Transmission fluid expands in heat and in order to receive accurate results, it must be under normal operating conditions. If the fluid is checked when the engine is cold, you may get false results indicating the fluid is low. Allow the engine to continue running while you check the level .