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By B-rad - Last Month
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Trying to find out what type tranny fluid for my recently rebuilt hydramatic
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By paul2748 - Last Month
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Do you have the ownersmanual? It might say something there.
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By miker - Last Month
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The manual is going to list an obsolete fluid. First I’d ask the guy that rebuilt it. But if it “says” Dextron, GM says it’s all backwards compatible. Some sources say Dextron IV is the only one they license now, so no Dextrin III can guarantee it meets the old spec. Confusing huh?
Most of the rebuilders I found are saying just Dextron.
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By alanfreeman - Last Month
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I have always used Type "F" in my '54 Mercury automatic transmission and that should be fine for your Lincoln hydramatic.
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By B-rad - Last Month
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What about synthetic fluid
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By KULTULZ - Last Month
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The manual is going to list an obsolete fluid.
First I’d ask the guy that rebuilt it
But if it “says” Dextron, GM says it’s all backwards compatible. Some sources say Dextron IV is the only one they license now, so no Dextrin III can guarantee it meets the old spec.
Confusing huh?
What Mike said, ask the re-builder. It is all going to matter as to what kit and friction materials he used, especially if considering going to a synthetic. He should have specified the type on the shop receipt as warranty is going to depend on it.
- https://fluidadvise.com/dexron-3-vs-4-vs-atf-4/
'TYPE-F' (if you can find actual 'TYPE-F') is going to give a much firmer shift. Save that for HI-PO.
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By miker - Last Month
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First an edit. Should have put Dextron VI. Don’t type Roman numerals much.
scrubrolet lists Dextron VI as a fully synthetic, backwards compatible ATF.
If your hydro is like any I’ve ridden in, you won’t need firmer shifts. They were fairly firm to begin with. And I’m not talking about B&M race units.
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By cokefirst - 4 days ago
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I love the misinformation about Type F fluid. Because it is Type F, many people assume it is for Fords. That is not what Type F stands for. Originally there was automatic transmission fluid Type A. It was then replaced by Type A, Suffix A. Almost ALL cars during the 1950's through the mid 60's used this fluid. Ford wanted a harder shift or correctly a more positive shift on the cars in the second half of the 1960's. Type A was replace with Dexron. Dexron/Mercon is a replacement now and the most correct fluid for your transmission is Dexron/Mercon III. It is not recommended to use the Dexron/Mercon 6 in older transmissions.
Fortunately, you can probably use any fluid that makes you feel good. Lots of folks use Type F and other used the Dexron. You can easily read the information on the sequence of the fluid types. If you think that Type F means Ford, then use Type F. If you want the most compatible fluid to the original, then that would be Dexron/Mercon III
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By KULTULZ - 4 days ago
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Ford first produced its own transmission fluid formulation in 1967 (for 1968 model year run), referred to as Type F or Type FA. The name comes from Ford’s specification number for the fluid, ESW M2C33-F. This fluid was used in all Ford transmissions until 1977 and most Ford transmissions until 1980.
SOURCE - https://www.hemmings.com/stories/tech-101-automatic-transmission-fluid-part-one-american-manufacturers/
Unless the container shows the SPEC shown above, it is not the correct formulation.
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By paul2748 - 3 days ago
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It is Dexron, not Dextron
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By miker - 3 days ago
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It’s hell getting old. Not only can’t I remember the Roman numerals, I can’t spell any more either. Thanks, Paul
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By KULTULZ - 3 days ago
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It’s hell getting old. Not only can’t I remember the Roman numerals, I can’t spell any more either. Thanks, Paul
Don't feel like the LONE STRANGER as I once sent Paul my addy and gave the wrong domicile state ...
Somewhere between lost and found ... 
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By KULTULZ - 3 days ago
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Again, the re-builder should have specifically specified what fluid(s) to use (if owner install). If shop installed, the receipt should specify the initial fill and what fluid to use in future service.
If the wrong fluid is chosen, experiences a failure, and once torn down on the bench it shows improper lubrication/friction modifiers, the warranty may be voided.
Check with re-builder (written recommendation preferable) -
- ACDelco® - Gold™ ATF Type III-H - OEM APPROVED DEXRON III -
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