I need to top off my automatic transmission fluid (it's down a pint). The book calls for Type A, but the only thing the parts store sells is Dextron III, Type F, and something made for modern Chryslers. Which one of these should I use to top off my tranmission fluid?

Thanks

I've been using Dextron III for years. My '69 service manual says type AQ-ATF, Suffix "A" or "Dextron".

Bob D



BBobbias@aol.com

Dextron III is the "safe bet" if you do not know what type of fluid is in the trans.

In the "racecar" I switched the 904 over to Type F and don't really feel any difference.
DD

I also use Dexron III in my '64 A904, but Type A is available here (Lubbock, Texas). Oddly enough, it's in the grocery stores and some discount chains, but not in the parts places.


dobie79423@yahoo.com

Will Dexron V work?

Yes, Dexron-VI will work (there's no Dexron-V), but Chrysler ATF+4 is my pick of the modern fluids.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Why ATF+4? Been running type F in the van since the rebuild over 100K ago.

The Cummins has to have +4. The Mopar brand at Wally World was the cheaper bottle!

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'72 Duster 198 stock cam, 3:23's Hookers on jack stands for 8 years in the driveway
'79 Maxivan 360 Offy Qjet Comp RV cam/rusting in the driveway.
93 D350 160HP Cummins Auto Dually Clubcab needs a injector pump
2005 Golden Couch Buick

Because it is superior to Dexron (-II, -III, -IV) in just about every aspect of transmission fluid performance, and vastly superior to the ancient, primitive Type F fluid.
That's a testament to the mayhem-resistance of a Torqueflite.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

I learned something new the other day- Dexron VI is a slightly lower viscosity (thinner) fluid than Dexron III, ATF+4 isn't. So its probably a better pick than Dexron VI from that regard too.

I doubt anyone would EVER have a problem in a 904 or 727 from using Dex VI- the viscosity difference is very small and those transmissions aren't at all picky.

I've been geeking up on oil tech by reading too much bobistheoilguy.com lately ;-p

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Dexron VI=Dexron 6

Dexron IV=Dexron 4

Is there a 6? Or are you guys not Roman numeral edjumicated?

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'72 Duster 198 stock cam, 3:23's Hookers on jack stands for 8 years in the driveway
'79 Maxivan 360 Offy Qjet Comp RV cam/rusting in the driveway.
93 D350 160HP Cummins Auto Dually Clubcab needs a injector pump
2005 Golden Couch Buick

DEXRON VI it is. Maybe IV and V didn't cut the mustard.

mmmmm ... mustard ...

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"When you find a big kettle of crazy, it's best not to stir it." - Pointy-haired Boss

1964 Valiant V200, 225/Pushbutton 904
BBD, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO