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Pouring gear oil into the shifter turret

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Old 01-11-18, 07:58 PM
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Pouring gear oil into the shifter turret

Is this a common practice? I ask because it was mentioned in the write-up I read for rebuilding the shifter (which I recently did). I'm going to put new fluid in my transmission and diff soon anyway, but the issue is that I barely have enough fluid as it is, assuming I'll need to fill both to their specified capacity. Does draining the transmission normally also drain any fluid that was added via the shifter turret? I assume not since that's not where you're supposed to add fluid. I have no idea how old it is or how much is in there, but it's obvious to me that someone once poured fluid into the turret since it was on my old shifter bushings, and I can see some by looking down into the opening. I could always buy more gear oil, but it would have to be from a different brand since the stuff I have is Neo 75w90.
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Old 01-12-18, 12:47 AM
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the oil in the shifter thing and the oil in the transmission dont see each other. siphon out the old shifter oil and pour new of that neo in there. not too much though. keep in mind it will get hot and expand.
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Old 01-12-18, 06:37 AM
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Yes 75w-90 gear oil is required. Page J-62 of the FSM. It also directs you to grease the shifter ball socket. Just be careful that you don’t overfill.
This is also covered in the FSM but can generate questions for first-timers... TWO drain plug (C and B), ONE fill (A). Probably not necessary but I use a little Teflon tape. And be careful not to go crazy tightening the plugs, especially two pipe threaded ones. Leave the socket-head plug alone.

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Old 01-12-18, 08:52 AM
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BTW the fill plug and the drain plug that doesn't have the crush washer needs some Teflon tape on the threads. If you look Mazda used that from the factory. Scrub off the old tape so the threads are nice and clean, wrap with new tape, good to go. If you don't you can get a seeping leak at those plugs.

Not sure if the shop manual says how much gear oil to put in the shifter hole, it shouldn't be much.

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Old 01-12-18, 10:51 AM
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Originally Posted by Sgtblue View Post
And be careful not to go crazy tightening the plugs, especially two pipe threaded ones. Leave the socket-head plug alone.
Believe me, I plan on it. Whoever did it before me used loctite or something, so I ended up rounding off the fill plug and had to get the torch out.

Originally Posted by DaleClark View Post
Not sure if the shop manual says how much gear oil to put in the shifter hole, it shouldn't be much.
It's somewhere around 80cc. I don't understand why they didn't use milliliters. It says to add fluid that way after a clutch job or disassembly of the transmission, so I was hoping I could skip it. If I have any of the Neo left over I'll pour it in there, but if not I can always go buy something else. Thanks for the info guys.
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Old 01-12-18, 11:21 AM
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Originally Posted by Mr357 View Post
It's somewhere around 80cc. I don't understand why they didn't use milliliters.
1 cubic centimeter = 1 milliliter
1cc = 1mL

I suspect that they used cc instead of mL because you would use a syringe to measure and squirt the oil in the shifter well. Syringe volumes in the medical profession were traditionally referred to as cc's. Probably more than you wanted to know.
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Old 01-12-18, 07:51 PM
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Awesome, another excue to go under the car... good info.
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Old 01-12-18, 10:19 PM
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For the sake of anyone who might reference this thread, I checked the FSM again and it says to use 80 - 95 cc of fluid which of course is 80 - 95 mL or 2.7 - 3.2 oz.

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Old 01-13-18, 09:52 AM
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FYI the amount above is with the back end of the trans DRY. It won't drain out doing a regular gear oil change, only if you opened the back half of the transmission up.

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