What transmission fluid should I use
 

Hello everyone I am new to this, I recently bought a rx8 rolling shell, I grew up around rotaries have a fc3s and even have a rotary tattoo'd on me, I bought a jdm engine and trans and out everything together I ordered some parts that I needed but still need a few more, main question I had was what transmission fluid should I use and is recommended?

RedLine MT90 is pretty common around here. Some folks had really good things to say about Eneos.

Whatever you choose, make sure it's GL4, NOT GL5.

Thanks, really appreciate the help!

I like and use Redline MT-90 in my transmission and Redline 75W90 in my differential. Eneos is highly-regarded. There is a less expensive Motorcraft gear oil that is also well-liked, but I am not sure of the part number.

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Ok cool, I'm trying to get my car running tomarrow(just waiting on a fuel line and hopefully that's it), kind of excited lol, gonna make it my daily so I'll plan on getting the redline mt-90, thanks for your input

I've tried the Redline.
I've tried the Royal Purple.
I've tried just about all the premium Xmission fluids.

In my not so humble opinion, Ford Motorcraft Full Synthetic Manual Transmission Fluid is superior to all of 'em.

Superior how? What does it do better than the others?

Smoother shifts, especially when cold.
The synchros seem to ramp up more smoothly.

Interesting. Maybe I'll try it next time.

Thanks for the info guys! My tranny is fairly noisy when I let the clutch out in neutral but it doesn't sound like a bearing. Hopefully she just need a fluid change

This is normal, these trannies make sort of a marbles rolling in a can sound in neutral.