You should change transmission fluid during high-stress conditions- manufacturers typically describe these conditions as “severe” driving: GM often recommends changing the fluid every 45,000 miles under “severe” conditions. For “normal” driving, though, there is no mention of changing the fluid. Toyota says to change the fluid every The oil needs to be changed every 30,000 to 50,000 miles, unless your owner’s manual states otherwise. The differential is a part in your vehicle that compensates for the difference the inner wheel and the outer wheels travel when you turn a corner. If you have a rear-wheel drive vehicle, your differential will be in the back with its own 5.5M views 3 weeks ago. Join Burgo from the Nulon Motorsport garage as he takes you through the easy steps on changing your gearbox oil. With this info you have no reason not to att WOW what a difference :o gear change feels smooth deacceleration noise has been dramatically reduced. i found a garden hose pipe was the ideal size for the refill, but the draw back is you can not see the oil in the pipe so i got a bit messy and i over filled it but it soon self leveled when i pulled out the pipe. Remove strut brace to access the 24mm gearbox drain bolt located on the left side of the gearbox if your standing infront of the car. Put the a bucket under the drain bolt area ready to catch the oil. Put the bolt in a safe place & allow the oil to drain. Once all of the oil has drained refit the plug with the washer securley. Select the right oil based on your need and the surroundings. Use an oil pump to pour it. Let the oil rest for a few minutes then tightly attach the gasket again. Run the engine and observe the changes. It is a good habit to check the gears and oil once a year. You might also be interested: Worm Drive Saw Oil. How to Change Manual Transmission Fluid - Changing Gearbox Oil Car Culture Buying & Maintenance How and Why to Change Your Manual Transmission Fluid Your stick shift works better when Shaun Whale from 4WD Action shows us how. All you'll need to do a gearbox oil change is a car jack, jack stands or ramps, level bar, socket or spanner, drain plug washer, oil drain pan, some v5YYe.