To check transmission fluid level, park the car on a level surface and then start the engine. While stepping on the brake, shift the transmission through each gear setting, then put it in park. Set the parking brake, the... More »

Lifehacker recommends checking a car's transmission fluid monthly. To do so, pull out the dipstick, wipe off the fluid, and put the dipstick back in. Remove the dipstick again, and inspect the quality of the fluid. More »

To check the transmission fluid level, find the dipstick, remove it completely, and wipe it with a rag before pushing the dipstick back into the transmission all the way and removing it again. The point that the fluid re... More »

To diagnose automatic transmission problems, check for a low transmission fluid level, which leads to poor shifting of a vehicle and gradually causes damage to the transmission, and check for leaks in the filler tube bas... More »

Dirty transmission fluid causes problems when shifting gears: grinding noises, stalling or misfiring of the engine and overheating of the transmission. These problems are very similar to those caused by low transmission ... More »

If a vehicle's transmission system runs out of fluid and it is not replaced, the moving parts within the transmission and engine can grind against each other and cause irreparable damage to the system. Transmission fluid... More »

An automatic gearbox uses a system that includes fluid coupling to transfer the engine's power to the transmission and a set of planetary gears that are locked or unlocked in different combinations to engage different ge... More »