4 speed transmition oil

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carcarzey

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What is a good oil to run in my 833 speed. I was thinking of ATF. Thanks Ken
 
I'm using Sta-Lube GL-4, bought it in NAPA. Jamie Passon built my 833, he specifically said not to use synthetic. There my be better choices, it will be interesting to hear what others are running.
 
Demon 408 said:
I'm using Sta-Lube GL-4, bought it in NAPA. Jamie Passon built my 833, he specifically said not to use synthetic. There my be better choices, it will be interesting to hear what others are running.
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Jamie built my transmission too and said not to use ATF. I used regular ole' gear lube.
 
I believe it was just 80/90 (probably original from 1966) I have a non od 833
 
My rebuilt A833 didn't like ATF. 2nd to 3rd always had a slight grind and ATF leaked slightly at the cover. I switched to 80/90 gear oil and problems disappeared.
 
I use 80-90 also. ATF is ok in tranies than run in very cold conditions, but synthetic is better then also. Since we don't drive our cars in the cold too much, just stick with the 80-90. B&M used to sell "Slick-Shift", is it still around in some form?
 
i use royal purple in the 833 and in the rearend. No problems , smooth shifts
 
MtNemoMopar said:
I use 80-90 also. ATF is ok in tranies than run in very cold conditions, but synthetic is better then also. Since we don't drive our cars in the cold too much, just stick with the 80-90. B&M used to sell "Slick-Shift", is it still around in some form?
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"Slick-Shift" isn't anything more than expensive Type F. (So I've been told).
I use ATF in mine. Seems to work pretty good for me.
 
66fs said:
That's what I use. There is a lot of wear when you use auto trans fluid when compared to 90 wt gear oil.
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my dad bought a 1970 challenger new in late '69 - it came with AFT - we rebuilt the tranny when it hit 112,000 miles ( hard miles ) and guess what went back in? ATF.

we didnt need any syncros, or gears either... so if the tranny has been taken care of the atf will not wear any more/ less then any other fluid.

I'd also use Jamie Passions formula - he would definately know what he is doing -

here is how the car was shifted it's whole life....




hell the car even towed a camper all over it's the 70's..
 
Years ago a Chrysler Tech Rep told me that even tho they came from the factory with ATF in them that the dealers were suppose to change them out on the first service (somewhere around 1500 miles) to 80-90 gear lube and the guys who race and have "slick-shift" setups were to use ATF but expect a slight leak on the side cover and the tail shaft. Since my tranny is regeared and slickshifted I have used ATF in it for the last 15 -20 years with out a problem (I pull it apart every 4-5 years to check things out) and the only thing that has needed replaced was the input shaft bearing. I tried 80-90 in it once and you can't shift it fast without it grinding a little - and forget power shifting without the clutch ...it ain't gonna happen...:) So I went back to ATF
 
DJVCUDA said:
my dad bought a 1970 challenger new in late '69 - it came with AFT - we rebuilt the tranny when it hit 112,000 miles ( hard miles ) and guess what went back in? ATF.

we didnt need any syncros, or gears either... so if the tranny has been taken care of the atf will not wear any more/ less then any other fluid.

I'd also use Jamie Passions formula - he would definately know what he is doing -

here is how the car was shifted it's whole life....
hell the car even towed a camper all over it's the 70's..
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Sorry, " a lot of wear" means "noticable wear". I can always tell if a trans had ATF or 90 wt gear oil after a lot of miles. Most wear is in the synchro splines, shift plates(shoes), roller bearings and countershaft(inside the coutershaft gear cluster). These are usually replaced, and will bring most 4 speeds to like new performance, barring any abnormal damage. I know Mopar used ATF from the factory. It was the first thing I replaced when I got any four speed or OD trans. I'm talking street performance and longevity. I'll give up a fraction of a second in the quarter mile or a fraction of a mpg. Racing is a whole different use, as OUTLAW described.
 
Had good luck with AmsOil 80/90, made the Jeep 5 speed shift smoother and quieter,....always used ATF when I did services at the stealership....
 
Whatever brand you chose make sure it is GL4.
GL4 is designed for soft (brass) syncros,which are in the 833.

GL4 is getting harder to find. I use Red Line MT-90.
Made my 833 feel like a brand new trans.
 
66fs said:
Sorry, " a lot of wear" means "noticable wear". I can always tell if a trans had ATF or 90 wt gear oil after a lot of miles. Most wear is in the synchro splines, shift plates(shoes), roller bearings and countershaft(inside the coutershaft gear cluster). These are usually replaced, and will bring most 4 speeds to like new performance, barring any abnormal damage. I know Mopar used ATF from the factory. It was the first thing I replaced when I got any four speed or OD trans. I'm talking street performance and longevity. I'll give up a fraction of a second in the quarter mile or a fraction of a mpg. Racing is a whole different use, as OUTLAW described.
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so the challenger in my post now has 114,000 miles with the original syncro's, gears, shafts, and shift plates.

It needed bearings, gaskets and seals - so what longevity are we loosing running ATF?
 
DJVCUDA said:
so the challenger in my post now has 114,000 miles with the original syncro's, gears, shafts, and shift plates.
It needed bearings, gaskets and seals - so what longevity are we loosing running ATF?
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I don't have a car with that few miles. The 67 has 400,000 miles and the 64 had about 250,000 miles when it was totaled for the last time. I'm still running the trans from the 64 with a 67 extension housing. I put them back to new. Next time i rebuild one, I'll take pictures. So, you don't think you have any wear on any of those parts? 4 speeds thru the 70's were some of the best made. Quality, metalurgy and tolerances were not as good in the later years. Will they still run good with a little wear? I think you have already answered that question, in your case. We all make our decisions, based on experience and knowledge. From what I have seen, rebuilding more than a few Mopar 4 speeds, I will not use ATF.
 
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