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Old 07-12-2008, 13:33   #1
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Type A Auto Transmission Fluid

Any one know a cross reference for Type A auto transmission fluid. I have a Universal M4-30 the gearbox case says use only Type A auto transmission fluid. I went to three auto parts stores and no one could help me.

Thanks,

Tim
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Old 07-12-2008, 13:36   #2
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I went through the same thing. Type A is GM so any new GM fluid will be fine.
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Old 07-12-2008, 16:36   #3
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Advice? Never go to an auto parts store and Identify any thing you need as for a boat.......they will give you the same head nod that your dog gives you when you talk to it.

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Old 08-12-2008, 03:14   #4
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The old Type A -transmission oil has undergone numerous improvements over the years, and is now known as Dexron Automatic Transmission Fluid (ATF).

The original Dexron oil became Dexron II, which developed into Dexron IIE in the early 1990's. Dexron IIE used extra additives that helped clean computer-controlled shift solenoids and pressure control solenoids inside the transmission. After only a short time, Dexron IIE became Dexron III, which is still the current Dexron designation.

Dexron III can normally be substituted for any of its earlier relatives; but Marine Diesel Direct specifies Type Aft. “A” or GM-DEXRON - II, for the Universal “M-Series”.

Universal M4-30 Images and Specifications - Universal Diesel Engine Owners Manual - Marine Diesel Direct / Torresen Sailing Site

Many Marine Transmissions use regular motor oil or heavyweight hypoid gear oil.
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Old 08-12-2008, 04:17   #5
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Unless the store manager for a national parts company happens to be a member of this forum, as I am.......
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Old 08-12-2008, 04:18   #6
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and, believe it or not, some of us still know how to read.....
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Old 08-12-2008, 05:59   #7
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Thanks everybody!

I saw the Dextrom III on the shelf. I'll have to look for the Dextron II.

Tim
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Old 08-12-2008, 08:09   #8
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Better still, call ZF Marine (who bought Hurth who built your transmission) and ask them what to use in the tranny. My guess is they'll say any good ATF is fine. They will also say, as will almost any conscionable tranny shop, do not, not, not use synthetic ATF. Yes, it will keep the gears happy. But it will also attack little brass parts in the clutch pack and that will kill the tranny deader than Dickens.

ZF's Stevensville, MD office number: 410-604-3320

DISCLAIMER: I have no connection with ZF Marine, save as a customer.
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Old 08-12-2008, 09:14   #9
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I would also steer clear of Type F fluid, as it actually is a bit "gritty".
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Old 08-12-2008, 16:38   #10
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Well when you ask them to cross reference a filter

and you show them the rack of catalogs......they just hand them to you.....with a stupid look....cos' no one ever taught them how to do it.
More often than not.

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Unless the store manager for a national parts company happens to be a member of this forum, as I am.......
Quote:
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and, believe it or not, some of us still know how to read.....
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Old 10-12-2008, 03:40   #11
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Let’s keep it “nice”, gentlemen.
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Old 25-12-2008, 07:29   #12
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There are a big discussion on this oil mark,Isn't it?

There are a big discussion on this oil mark,Isn't it?
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