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Old 09-10-2012, 12:04 PM   #1
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Dextron III or hydraulic fluid?

I recently blew a hydraulic line on my Powergear Jacks. The reservoir says to use Dextron III ATF, is this the same as regular hydraulic fluid? I have a supply of hydraulic fluid and don't want to have to buy Dex III unless I have to.
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Old 09-10-2012, 12:35 PM   #2
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Like yours, my MH manual specifies Dex III...that's what I'd use even if it costs a couple of bucks at WM.
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Old 09-10-2012, 01:58 PM   #3
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The Dextron III has more additives for anti-foaming, more stable viscosity at low temps. One other point, THE MANUFACTURER RECOMMENDS IT. For that reason alone, I'd suggest Dextron III.
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Old 09-10-2012, 05:21 PM   #4
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The short answer is, yes, Dexron III is a hydraulic fluid. But all hydraulic fluids are not equal, just as all oils are not equal. They come with many different ratings and characteristics, and who knows if the hydraulic fluid you have is suitable for use in the Power Gear system.
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Old 09-11-2012, 08:16 AM   #5
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Think I will use the Dex III and just save the hydraulic fluid for the tractor. Thanks everyone!!
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Old 09-11-2012, 12:21 PM   #6
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What Gary Said.. Plus there is another fact: Though there are many hydraulic fluids, NOT ALL MIX WELL. And if you put in the wrong one bad things happen.

I too support the "Use specified" chorus.
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Old 09-11-2012, 04:33 PM   #7
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Problem is there is no more "certiied Dexron III" since GM does not maintain this spec anymore. But I still use the Walmart Dexron III and recently topped off my jacks with it. Good luck with it.
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Old 09-12-2012, 12:11 AM   #8
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Good luck trying to buy "Dextron III"!! You'll have better luck looking for "Dexron III"
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Old 09-12-2012, 06:29 AM   #9
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cheaper than replacing the seals in the system
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Old 09-12-2012, 08:16 AM   #10
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Mr. D,
Ha-Ha, maybe I'll just ask for Dex III
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Old 09-23-2012, 10:13 AM   #11
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Quote:
Originally Posted by Mr_D View Post
Good luck trying to buy "Dextron III"!! You'll have better luck looking for "Dexron III"
Dextron III can be found in the aisle with the Nucular Weapons.
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Old 09-27-2012, 01:01 PM   #12
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Will I need to bleed the lines at the jacks like you have to bleed brake lines on a car?
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Old 09-27-2012, 01:57 PM   #13
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I don't believe you'll find bleeder valves on the line or cylinder. The fluid flows back to the reservoir where air is expelled. If you do find bleeders, check your manual for bleeding instructions.
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Old 09-27-2012, 03:01 PM   #14
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To bleed the powergear, crank it up high, let it sit for a while, lower it, repeat. Several times.

As you are correcting a compromised system, it would speed things along to crack the line fitting on the repaired cylinder, have someone mash the button until fluid comes out, then tighten it up.

Then do the "bleeding" above.
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