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gear lube or atf in a 833 4 speed

Posted By: bigblockbryan

gear lube or atf in a 833 4 speed - 05/13/14 08:42 PM

okay i was googling capcity for my 833 4 speed and some one said to run atf. In them is this a good idea or should i just get 80-90.I know in the new fwd drive stuff they use atf my 4 speed is a 71 23 spline is correct capcity 4 qarts thanks.

Attached picture 8143444-1000466_10151438815316082_1649019728_n.jpg
Posted By: dustergirl340

Re: gear lube or atf in a 833 4 speed - 05/13/14 08:45 PM

This has been a hot topic in the past. We use 90w gear oil.
Posted By: Pynzo

Re: gear lube or atf in a 833 4 speed - 05/13/14 08:46 PM

90wt. Gotta agree.
Posted By: 70sixpkrt

Re: gear lube or atf in a 833 4 speed - 05/13/14 08:48 PM

I currently am using Passon Perf lube for my 18 spline. It is red like ATF. I might switch back to the old Stalube 85-90 GL-4 gear oil.
Posted By: John_Kunkel

Re: gear lube or atf in a 833 4 speed - 05/13/14 09:08 PM


And some of us who tried both prefer synthetics even though the 833 gurus recommend against it.
Posted By: Steve Bryant

Re: gear lube or atf in a 833 4 speed - 05/13/14 09:15 PM

We used 90W in my Cuda
Posted By: smos001

Re: gear lube or atf in a 833 4 speed - 05/13/14 09:23 PM

GL4 ONLY. I talked to valvoline tech support and they stated that GL5 eats yellow metal and should not be uses in mopar A833.
they suggested synchromesh.
Posted By: John_Kunkel

Re: gear lube or atf in a 833 4 speed - 05/13/14 09:27 PM

Quote:

GL4 ONLY. I talked to valvoline tech support and they stated that GL5 eats yellow metal and should not be uses in mopar A833.
they suggested synchromesh.



GL5 only eats yellow metal if sulphur is used in the fluid as an anti-friction additive. It shouldn't be used in any trans because the anti-friction additives defeat the purpose of synchros.
Posted By: DAYCLONA

Re: gear lube or atf in a 833 4 speed - 05/13/14 09:31 PM

90 wt....end of story
Posted By: 70sixpkrt

Re: gear lube or atf in a 833 4 speed - 05/13/14 09:35 PM

I heard Gl-5 does not go good with the Syncro Rings. I get 85-90 GL4 and 80-90 GL5 mixed up all the time. I think 80-90 GL5 is for the rear diff. Had to edit my previos post.
Posted By: ditchdrift

Re: gear lube or atf in a 833 4 speed - 05/13/14 10:56 PM

syncromesh fluid. best working fluid i have found.
Posted By: ademon

Re: gear lube or atf in a 833 4 speed - 05/13/14 10:56 PM

Most like the Passon, redline MTF, or synchromesh fluids. You can run ATF if you drive in cold weather I wouldn't use it in warm weather.
Posted By: therocks

Re: gear lube or atf in a 833 4 speed - 05/14/14 01:47 AM

90W in my 65 4 speed.It had syncros put in it in 69 and thats it.It came with gear oil so thats what it runs.Rocky
Posted By: frank

Re: gear lube or atf in a 833 4 speed - 05/14/14 02:39 AM

I use Passion's oil in mine and it does not shift well. I'm going to switch to the 90 weight next time
Posted By: gregn96cuda

Re: gear lube or atf in a 833 4 speed - 05/14/14 03:10 AM

My trans guy used 30 weight motor oil in my hemi 4 speed. It shifts fine for me.
Posted By: Ron_M

Re: gear lube or atf in a 833 4 speed - 05/14/14 03:36 AM

My vote is for Jamie Passon's elixr. Call him up!! I tried Pennzoil Synchromesh and soon regretted it.

I was out rowin 4 Monday morning and loving every minute of it!
Posted By: 70Cuda383

Re: gear lube or atf in a 833 4 speed - 05/14/14 03:38 AM

What's different about the syncros in an 833 from those in a T-56?

Tremec told me to run ATF3 in my T-56
Posted By: 135sohc

Re: gear lube or atf in a 833 4 speed - 05/14/14 04:01 AM

Quote:

What's different about the syncros in an 833 from those in a T-56?

Tremec told me to run ATF3 in my T-56



The 833 is traditional brass ring, single friction surface. The brass rings have grooves in them to ride on the cones of the speed gears and the rings cut through the oil film and speed match the gear when selected to.
The T56 uses a a fiber type friction material on everything except reverse. Similar in appearence/theory of operation to the clutch plate friction material in an automatic transmission. The thin ATF flows better and the friction material pushes it out the way when selected to.
Posted By: kentj340

Re: gear lube or atf in a 833 4 speed - 05/14/14 04:32 AM

Isn't the factory service manual the authority on this? Here is what the FSM says for 4-speed transmissions:

"During cold weather, if shift effort becomes extremely high, transmission should be drained and refilled with Multi-Purpose Gear Lubricant SAE 80 or SAE 90, as defined by MIL-L-2105B or with automatic transmission fluid types labeled "Dexron Automatic Transmission Fluid or Chrysler Automatic Transmission Fluid AQ-ATF-2848A" available under Part Number 1843314. Automatic transmission Fluid should be replaced with Multi-Purpose Gear Lubricant SAE 140 in warm weather. NO OTHER LUBRICANTS SHOULD BE USED."

SAE Gear Oil 140 IS NOT EQUIVALENT in viscosity to SAE Engine Oil 140.

But SAE Gear Oil 90 IS EQUIVALENT in viscosity to SAE Engine Oil 50 according to this chart:

Attached picture 8144030-visc.jpg
Posted By: Ramrod39

Re: gear lube or atf in a 833 4 speed - 05/14/14 06:50 AM

I've tried both. The old 833 shifted better with ATF but leaked a little.
Posted By: ademon

Re: gear lube or atf in a 833 4 speed - 05/14/14 07:24 AM

the Passon shifts great in mine and BTW its a fairly thin oil, my guess is about a 5w/30 in viscosity. maybe Passon or Brewers can chime in but i remember one of them saying no to atf for a street driven car.
Posted By: an8sec70cuda

Re: gear lube or atf in a 833 4 speed - 05/14/14 01:24 PM

Quote:

syncromesh fluid. best working fluid i have found.


Pennzoil Syncromesh. Have it in my dad's 440-6 road runner...works great.
Posted By: Commando1

Re: gear lube or atf in a 833 4 speed - 05/14/14 01:43 PM

Initial fill should be ATF.
Drive it.
Check for leaks.
Drain, refill with heavier lube of choice.
Posted By: dogdays

Re: gear lube or atf in a 833 4 speed - 05/14/14 05:48 PM

BTW, no such thing as SAE 140 motor oil.

R.
Posted By: John_Kunkel

Re: gear lube or atf in a 833 4 speed - 05/14/14 08:22 PM

Quote:

Isn't the factory service manual the authority on this?



Obviously, not to everybody.
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