Quote:
Originally Posted by randy88fj62
The factory service manual (FSM) covers this. Once you install the cooler you need to park the truck on flat ground and open up the fill plug on the transmission pan. If fluid comes out you are over filled. If no fluid comes out you need to add more.
I would suggest that you add 1-2 quarts when installing the cooler then open the fill plug and let out the extra.
Once you have this all done you need to drive it for a day or at least up to 175°F (aka operating temperature) then recheck the fluid level.
You can get the fluid from the dealer. Toyota P/N 00289-ATFWS (WS is 'world standard').
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Just to clarify what you wrote, the "fill" plug is on the passenger's side of the transmission, not the pan, there are 2 plugs on the pan, one is a drain plug and the other is the "check fluid level" plug, this plug is recessed up into the pan a bit, the drain plug is flush with the bottom of the pan.
Also you need to get the fluid up to a very specific temperature to properly check the fluid level, which I believe is right at 125 degrees, but that needs to be confirmed to be sure, there are many topics on this forum that has the correct temperature for checking the level, I know for a fact 175 degrees is way to hot to properly check the fluid level, if you pull the "check fluid level" plug at that temperature you will drain out more fluid than you should and the transmission will be low on fluid because of the higher temperature.
