| Antifreeze in the transmission oil [message #353569] |
Tue, 07 April 2020 23:04  |
Fipp
Messages: 26
Registered: December 2017
Location: Aledo, Illinois
Karma: -1
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Long story, Put a manny tranny in May of 2018. Never shifted right after install but lived with it. Finally today found a transmission guy thats laid off and we started to get to the bottom of the issue. emptied some tranny fluid and found antifreeze in the transmission fluid and lots of aluminum particles and some pins (see photo) Long story short, new governor ordered and new valve body. Not sure what to do about the radiator as it was recored by PO in 2011. Any ideas for the radiator
Scott D. Fippinger
Aledo, Illinois
1976 Royale
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| Re: Antifreeze in the transmission oil [message #353570 is a reply to message #353569] |
Wed, 08 April 2020 01:06  |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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Disconnect the transmission lines from the radiator and add a new external trans cooler in front of the radiator. I do not have a recommendation on which one to buy but others here will give you some ideas / recommendations.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
[Updated on: Wed, 08 April 2020 01:06] Report message to a moderator |
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| Re: [GMCnet] Antifreeze in the transmission oil [message #353575 is a reply to message #353572] |
Wed, 08 April 2020 06:48 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Thanks, Billy,
I sent Eugene a note telling him of our on-going problem and asking him to
help by adding instructions to join GMCNet along with Forum. Apparently
the copy I addressed to the list won't appear.
Ken H.
On Wed, Apr 8, 2020 at 7:40 AM Billy Massey via Gmclist <
gmclist@list.gmcnet.org> wrote:
> ------------------------------
> Fipp is currently offline Fipp United States
> Messages: 15
> Registered: December 2017
> Location: Aledo, Illinois
>
> Long story, Put a manny tranny in May of 2018. Never shifted right after
> install but lived with it. Finally today found a transmission guy thats
> laid
> off and we started to get to the bottom of the issue. emptied some tranny
> fluid and found antifreeze in the transmission fluid and lots of aluminum
> particles and some pins (see photo) Long story short, new governor ordered
> and new valve body. Not sure what to do about the radiator as it was
> recored
> by PO in 2011. Any ideas for the radiator
>
> Scott D. Fippinger Aledo, Illinois 1976 Royale
> --------------------------------
>
> Thread originator, Fipp, is now a member of GMCnet email list.
>
> bdub
>
>
> -----Original Message-----
> From: Gmclist On Behalf Of Ken Burton via Gmclist
> Sent: Wednesday, April 8, 2020 1:06 AM
> Subject: Re: [GMCnet] Antifreeze in the transmission oil
>
> Disconnect the transmission lines form the radiator and add a new external
> trans cooler in front of the radiator. I do not have a recommendation on
> which one to buy but others here will give you some ideas /
> recommendations.
>
>
>
> _______________________________________________
> GMCnet mailing list
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: Antifreeze in the transmission oil [message #353576 is a reply to message #353569] |
Wed, 08 April 2020 07:04 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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If you add an outboard cooler, look carefully at the connections to it. I had a DeRale oil cooler which simply extended the copper lines out of the fins a bit and brazed a fitting on it. Over time, the line cracked behind the fitting. Had I been on the highway instead of backing into an RV space at a campground and seeing the huge puddle of oil, I'd have failed the engine catastrophically, if the DigiPanel was a bit slow. Be sure there's no way vibration can flex the fittings. This cooler was installed correctly by a GMC shop.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: Antifreeze in the transmission oil [message #353582 is a reply to message #353569] |
Wed, 08 April 2020 08:23 |
kingd
Messages: 592
Registered: June 2004
Karma: 2
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Senior Member |
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I hate to be the bearer of bad news, but when that happened to my wifes car, the tranny didn't
Last very long even though it was flushed with fresh transmission fluid several times after the new radiator was installed. My brother-in law, a mechanic withe over 40 yeas experene who was also the
Shop owner, had never actually seen this failure before but he had heard of it happening. F you're
Going to pull the tranny and take it apart, I'd suggest replacing any and all the parts the the antifreeze could get into like the friction material of the clutches etc. It maybe a case of do it now or do it shortly.
Sorry to hear about your bad luckt
DAVE KING
lurker, wannabe
Toronto, Ontario, Canada
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| Re: Antifreeze in the transmission oil [message #353584 is a reply to message #353582] |
Wed, 08 April 2020 09:08 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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I as thinking about what the antifreeze contamination could get to. Basically it was everything inside because everything inside is covered with ATF. I think you are going to have to get someone smarter than me to decide what part could have been damaged. I know on engines they worry about rod, main and cam bearings. In a trans what parts could have been damaged. I do not know.
Manny has always been the go to guy to call. There may be others.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: Antifreeze in the transmission oil [message #353588 is a reply to message #353569] |
Wed, 08 April 2020 09:52 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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Senior Member |
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Applied GMC has a direct fit aluminum radiator you might consider.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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