Changing Automatic Transmission Fluid
 

Hey guys.

So I'm planning on changing my ATF for my FRS here soon. I'm planning on using Redline D6 fluids. Now, I want to do this myself, but after doing research and reading over the instructions a few times, I'm feeling a bit concerned.

The instructions state to bring the transmission fluid temp to around 42c at certain points. Being as I don't have a Toyota diagnosis tool, how would I go about doing this correctly, or do I have to bite the bullet and let a dealer do it? :eek:

If anyone has tips, instructions, or lessons learned, I appreciate it!

Thanks guys.

If your unsure after reading the instructions, I would suggest you have the dealer or a transmission shop do it.


humfrz

Okay, fair enough. I'm buying fluids now. I got redline d6 ATF for the AT tranny and motul 300v 75w90 for the diff. Random question, if you have an AT, would the diff require different fluid than the manual?

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I believe that all differentials in the FR-S, made for the US market, have the same differential, whether the transmission is an AT or MT, so the fluid replacement would be the same.


humfrz

The service manual explains how to adjust the fluid level without any SST.

To drain and fill, you need:
Flat floor
BRZ service manual
Crush washers for drain hole
Some way of funnelling ATF in to the fill hole
Drip tray
Wire
Patience

That will replace about 1/8 of the fluid.


If you want to replace it all, you need to go to a reputable transmission shop that can pump fluid through the entire transmission including the torque converter without fucking the valve body, etc.