This is my first MT car and I don't know where the fill plug is. I also need to know what the recommended brand is, what type of fluid, and how much to put in it. Thanks

 

There is a drain plug on the bottom of the tranny. If you can find Redline shockproof lightwieght MT fluid use that. Fill it up with 2 quarts. The fill plug is on the driver side of the tranny twards the front.

 

https://www.rx7club.com/showthread.p...ansmission+oil


there are more.....

 

So 2 quarts of 80w90 MT fluid? Is that a good viscosity or should it be a tad thicker/thinner? I'll just run by Walmart and get something like Castrol. I've been running Castrol GTX 20w50 in all of my car's engines for 3 years and I love it. At least nobody gave a retarded response on this question... I've been driving slush boxes all my life and this is my first MT I've owned. I might as well change the dif fluid while I'm at it.

 

I bought my son his first car, 1987 Mazda RX7 non turbo. We just put the tranny back in after doing a new clutch job. My son left his manual at school and I am trying to fill the tranny back up with fluid.
My question is, I see the drain plug, then above that on the side the check plug. When I feel around for the fill plug (towards the top drivers side of the tranny), I feel two plugs. One right above the other, so, I tried a 14 mm open end wrench (someone said it was 14 mm I think) and as it turns out, feels like both are 14 MM.
I am unsure which is the fill plug. The two plugs are about 1/2" or so apart, very close to each other. The top one seems to be in a raised cast round area and the other (lower of the two) flush mounted.
I seem to have seen somewhere on the forums that someone said do not remove the recessed or countersunk , or something like that .. plug

So, which plug to I pull to fill the tranny

thanx

 

the rear plug is the check the front plug is the fill.
undo both plugs, fill it up until fluid just starts to drip out of one, then close em all shut
use a good quality gear oil on your transmission. like rp redline or amsoil. you wont regret it in the long run(2nd gear can g pretty easily)

 

Holy crap this is an old thread..

 

thanks ..
duhhh
got it .. that was easy enough ..

thanks

 

Your trans needs very thick oil, expecially rx7s. I went with mobile 1 gear lube..works like a charm.