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69 roadrunner a833 fluid question
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TRev383
New User
| Posts: 3
| Joined: 07/09
Posted: 07/25/09
07:58 PM
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What kind of fluid should i put in my 69' plymouth roadrunner transmission??? Its an A833 fourspeed manual transmission. It has always had ATF in it but i have found metel flakes in the fluid I drained recently. Does any one have any suggestions the book says to use sae 140 gear oil???? But that was written in 1969. Im not sure what to use????
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drmopar
Guru
| Posts: 830
| Joined: 02/08
Posted: 07/25/09
08:16 PM
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Believe it or not they indeed used gear oil in the old days. My recommendation I would use a synthetic 70w90 gear oil.
The lighter oil helps with the shifting while the synthetic blend will protect the metal from wearing.
I actually us the 70w90 in the rear of my drag car and have had zero problems in 4 yrs.
Doc
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Cudadon
User
| Posts: 92
| Joined: 02/08
Posted: 07/26/09
02:57 PM
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The 833 4-speed originally called for type A automatic trans fluid. This was later changed to Dexron when it came on the market. This is why they take 7 pints of oil versus 3-4 pints on other 4-speeds. The synchro's are designed for ATF and work better with it. A bulletin was published years ago saying to use gear oil when there were complaints of gear rattle. I have always used ATF in mine, even for Drag Racing. Faster shifts can be made with ATF. You might get away with gear oil in warmer climates, but shifting might be hard in cold climates.
Note: ATF does leak easier with worn seals.
Don
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