RX 4 Speed

Folks, I tried searching but didn't quite get what I was looking for. I may not have the correct terms, and what not. But anyways, here is my question...

You know how when you replace the shift rod bottom bushing (end of the ball), or even replace the entire shifter with a short shifter? They say to top the chamber with "fluid"... my question is, what exactly is that fluid? Is it just simple transmission fluid (what I figured, but wanted to be sure)? What brand do you recommend? And lastly, do I just fill it up till I can see it topped?

Thanks in advance for the help.

dgeesaman

iTrader: (7)

Its transmission (gear) oil. Just what's in the tranny itself. Fill it up to about the middle of the ball so that when the ball is put in you don't overflow it. Make sure the ball is greased as it's supposed to be. Reference the FSM page J-59, the measured volume of oil equates to 3/8 of a cup. That's about 80grams of oil, if you have a scale around to measure it. Next time I'm in there, I'll empty it and pour in the right amount based on weight.

For a general tranny oil recommendation, the Neo 75W-90HD is popular here, as well as Royal Purple and Redline. Run a search for 'tranny neo' and you should hit the threads that have discussed it.

Dave

Sgtblue

iTrader: (16)

https://www.rx7club.com/showthread.p...smission+fluid
https://www.rx7club.com/showthread.p...smission+fluid

Here's a couple that might help

As dgeesaman suggested, be sure to use grease on the ball of the shifter and at that bottom bushing. Then fill with fluid. I think the grease is often overlooked and might even be the source of some of the complaints about stiff/rough shifting. FWIW, I'm running Redline MTL right now, but intend on changing over to NEO soon.

RX 4 Speed

thanks guys... I appreciate the info. I know Redline and Neo are prolly the best, but is there any law to using like a Mobil 1 75W-90 or a more common brand? My car is not modded to heck, so I figured I could just grab some for a common auto store... if not, I have no problem ordering some from Mazdatrix either... just wondering.

Mahjik

iTrader: (1)

No, there is no law against using something from a local auto store. I use Royal Purple, mostly because NAPA carries it and they are a few minutes from my house.

As long as it's the correct weight, you'll be fine. If you do happen to go with Redline, make sure to get MT-90, not MTL (MTL is too thin).

Sgtblue

iTrader: (16)

^Mahjik's right, as usual.

Edit: I have MT-90 in my transmission.. but can make someone a good deal on the MTL on the shelf in my garage, which is why I mistakenly mentioned it earlier. Sorry for adding some confusion.

Mahjik

iTrader: (1)

I honestly don't think it would be too big of a deal to run the MTL (as I've known people to use it). However, I doubt it will last as long as the heavier oils so the MTL users would be changing it more frequently. I would also recommend the heavier stuff for those guys who track their cars.

RX 4 Speed

thanks guys... I did not know that NAPA carries Royal Purple. In that case, I will just go there and get some. I'll return the Valvoline 75W-90 that I got, and get some Royal Purple.

thanks for all the help guys... I appreciate it.

widebody2

I use the neo but have found that filling about 1/3 of the tranny with lucas oil helps quite a bit with notchy gears.

RX 4 Speed

hey Mahjik, I tried calling our local NAPA stores here, and they don't carry Royal Purple. I checked the NAPA website and they don't have it either. Who else carries it? (national auto store...)

Mahjik

iTrader: (1)

If you have any "Rice Shops" in the area, most of them carry Redline, Neo, Royal Purple or some other brand of high quality oil.

I'm shocked your local NAPA doesn't have Royal Purple, but I guess they really don't sell a lot of it. I picked up some 20w50 for the track last year and the bottles had about 2 inches of dust on them.

adam c

iTrader: (2)

In an older thread, there seemed to be a consensus that Neo was really good in your tranny. Since tranny fluid doesn't get changed very often, why not put in the best stuff?

I say go with Neo, even if it takes a few days longer to get it.