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Author Topic: John Deere Hy-Gard in a transmission.  (Read 1221 times)

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Offline mopar1

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John Deere Hy-Gard in a transmission.
« on: July 30, 2009, 09:33:28 AM »
I found the link here on our diesel link page. I have read all 12 pages at turbomustangs web site and found it pretty interesting. Is anybody using it in a 47RE?
It is never to soon to accept Jesus into your life, but in a moment, it could be too late.





72 Dodge D200 Crew cab
97 Dodge Ram
00 Jeep Grand Cherokee
12 Subaru legacy

Offline s ǝoɾ

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Re: John Deere Hy-Gard in a transmission.
« Reply #1 on: July 30, 2009, 01:50:23 PM »
Not yet, I am going to make sure I have money for a valve body IMMEDIATELY after the fluid switch. The old myth about not changing fluid on a high mileage vehicle has popped up many times, and it usually has something to do with freed up junk and the valve body.

I figure might as well drop in a good valve body anyways, not to mention the fact I should be assured a new one would be relatively clean preventing those so called failures.

I do not think I would go straight hy gard as it allegedly shifts pretty hard.

Contrary to popular belief, the switch to ATF-4 was a driveability issue (tcc shudder and "too firm" shifts) and to consolidate lube selections. (only carrying one universal fluid is much easier on the logistics end)

I will continue to keep some ATF 4 in the system, which has friction modifiers to smooth the shifts slightly and dye the fluid red.

My results wouldn't be a fair representation though, because a rebuild is going to be needed soon enough anyways.

The one concern is the fluids slightly higher viscosity verses the dacron filter. This could cause cold start buzzing and humming in colder weather. I don't think a different courser filter media is available for us, such as the ford guys who can swap to brass screens. Courser filter media seems counter productive, but with the conversion to external filter, it is a moot point IMHO
Avoid replacing any part that you have not proven to be faulty through extensive testing.

Offline mopar1

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Re: John Deere Hy-Gard in a transmission.
« Reply #2 on: July 30, 2009, 03:16:45 PM »
My main reason for considering it was the lower stall speed or tighter torque converter they say they get. As we were talking about before, my converter is a factory loose converter. The trans and converter has just been rebuilt but without more people with years and miles of service using the Hi-Gard I am not going to risk it.
It is never to soon to accept Jesus into your life, but in a moment, it could be too late.





72 Dodge D200 Crew cab
97 Dodge Ram
00 Jeep Grand Cherokee
12 Subaru legacy

Offline magnumRC

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Re: John Deere Hy-Gard in a transmission.
« Reply #3 on: July 31, 2009, 09:13:31 PM »
Isn't that a hydrostatic fluid?  I don't know if it would be okay in an automotive transmission with clutches, unless tractors have similar type clutches.
83 Ramcharger w/92 Cummins, NV4500, NP208, D44/ 9.25 axles, 3\" lift, turned up VE pump (mild).

Offline s ǝoɾ

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Re: John Deere Hy-Gard in a transmission.
« Reply #4 on: July 31, 2009, 09:22:25 PM »
Isn't that a hydrostatic fluid?  I don't know if it would be okay in an automotive transmission with clutches, unless tractors have similar type clutches.
Yes it is a power shift hydrostatic fluid.

Go check out the links to see some more info/debate on this. It gets pretty interesting.
Avoid replacing any part that you have not proven to be faulty through extensive testing.

Offline magnumRC

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Re: John Deere Hy-Gard in a transmission.
« Reply #5 on: July 31, 2009, 09:41:19 PM »
I'll check it out.  I use it for hydraulic fluid in my Farmall and for tractor fluid in my Yanmar.
83 Ramcharger w/92 Cummins, NV4500, NP208, D44/ 9.25 axles, 3\" lift, turned up VE pump (mild).