Now the last important question that remains is what type of fluid to put back in, meaning what fluid will be more helpful in preventing the need to purchase a transmission for sale, conventional or synthetic. For lots of different reasons that is an easy answer, synthetic. Premium synthetic fluid will lubricate the transmission better, provide better friction to the clutches, removes heat better, and not break down as fast under high temperatures. Premium synthetic ATFs will protect better and last 3-5 times longer then conventional ATF. When the transmission with being reinstalled in your car or truck, ask the owner to use Mobil I synthetic fluid or the equal.. It is one the very best ATFs in the world. I will let you guess what I use.
The filter should be changed with the fluid flush, just like motor oil filters. I got an e-mail from a guy that said he was told by a Toyota Service Rep that there is no filter in the transmission. The amazement continues. There are some transmissions out there that do not have replaceable filters, but this is not one of them.
When the filter is replaced it has to be done with care. There are three inlets on the filter where the fluid passes into this particular transmission. Each has its own gasket. It is common for at least one of these gaskets to slip out of position during installation and cause air to leak into the pump pick up causing it to break suction and loose output pressure. The problem usually presents after hard stops and the transmission will not complete its shift into first. Then when you go to pull off the engine revs up and then the transmission engages very harshly with a tire chirp. Which is a precurser to a rebuilt transmission. Just make sure they are all properly positioned during replacement.
The pan does not use a gasket, but many shops will try to install a cork one. Toyota uses their own seal packing material that is available from the parts counter. It is similar to RTV. They have two kinds, black and red. The black is for the engine and water pump and the red is for the transmission. Trust me, clean your mating surfaces with an evaporating cleaner, like brake dry clean, and the RTV sealer will out last a cork gasket any day.
What is important, in my opinion to be on the highest alert that you are getting a transmission filter change and using synthetic ATF, while this particular type of transmission flush is performed. Any more questions? Please e-mail me or use the comment box. Sign up for a free subscription to the GotTransmissions.com Blog today.
