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What to use to clean an automatic trans case? #2972488
10/09/21 07:51 PM
10/09/21 07:51 PM
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charge70 Offline OP
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Does anyone know what to use to clean a transmission case?I'm rebuilding the trans in my Charger and I want to get the deep oil stains out of the case. Any suggestions?Thanks,John.


1970 Dodge Charger R/T S.E. 1969 Dodge Dart GTS 440 M-Code 1970 Dodge Charger 500 383/4-speed w/A.C.
Re: What to use to clean an automatic trans case? [Re: charge70] #2972506
10/09/21 08:40 PM
10/09/21 08:40 PM
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TJP Offline
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A aluminum wheel cleaner for non coated wheels may do the trick if they're not to bad and the case is complete degreased
or google cast aluminum cleaner beer

Re: What to use to clean an automatic trans case? [Re: TJP] #2972559
10/09/21 10:55 PM
10/09/21 10:55 PM
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Transman Online content
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Mineral spirits first. Then hit varnish and serious stains with toluene.

Don’t breathe the fumes.

Re: What to use to clean an automatic trans case? [Re: Transman] #2972620
10/10/21 10:23 AM
10/10/21 10:23 AM
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Originally Posted by Transman
Mineral spirits first. Then hit varnish and serious stains with toluene.

Don’t breathe the fumes.

or smoke, Toluene in model glue is what would get the glue sniffers high whistling

Re: What to use to clean an automatic trans case? [Re: TJP] #2972623
10/10/21 10:34 AM
10/10/21 10:34 AM
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Originally Posted by TJP
Originally Posted by Transman
Mineral spirits first. Then hit varnish and serious stains with toluene.

Don’t breathe the fumes.

or smoke, Toluene in model glue is what would get the glue sniffers high whistling


Maybe that’s why I am happy when I clean cases. wink

Re: What to use to clean an automatic trans case? [Re: Transman] #2972626
10/10/21 10:44 AM
10/10/21 10:44 AM
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I use a regular degreasser first then pressure wash all the bulk of grease and oil off. I use Zep Orange but any degreasser will work like purple power. Then I use a caustic degreasser that basically etches the aluminum and gets it perfectly clean. The best stuff was some I got from a friend who worked for a hvac company. It cleaned awesome and left the aluminum shiny. Most leave the aluminum a dull grey.
Only pressure wash a transmission if you will be taking it apart immediately. No matter how well you try to seal it up there will be some water that makes its way in.

727_1.jpg727_2.jpg
Re: What to use to clean an automatic trans case? [Re: charge70] #2972629
10/10/21 10:47 AM
10/10/21 10:47 AM
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Alberta
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There's a local guy that advertises Vapor Blasting for aluminum parts. The parts come out like brand new. Not sure if there is someone in your area that does It?

Re: What to use to clean an automatic trans case? [Re: 440_Offroader] #2972661
10/10/21 12:18 PM
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Glass bead/media blast always gives a nice surface look. Vapor blasting is the same process but with water instead of air.

Re: What to use to clean an automatic trans case? [Re: Moparite] #2972704
10/10/21 02:07 PM
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Purple power is a strong degreaser that has "brightner" in it and i agree with Mike, its a great way to cut the lardy caked on sludge accumulate. You may have to agitate with a stiff brush after it has sat for a few minutes. Then, find a truck wash( big rigs) or similar place that will sell you straight wash acid. It will disintegrate any remaining grease or residue and leave a nice etched surface suitable for painting or polishing. Do not leave acidic products on aluminum for too long, they will start to dissolve the metal.

Last edited by moparjim79; 10/10/21 02:07 PM.
Re: What to use to clean an automatic trans case? [Re: charge70] #2972737
10/10/21 03:57 PM
10/10/21 03:57 PM
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Case (and other stuff) cleaner.

Wash Cabinet.JPGWash Cabinet Open.JPG

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Re: What to use to clean an automatic trans case? [Re: Transman] #2972846
10/10/21 08:52 PM
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Originally Posted by Transman
Originally Posted by TJP
Originally Posted by Transman
Mineral spirits first. Then hit varnish and serious stains with toluene.

Don’t breathe the fumes.

or smoke, Toluene in model glue is what would get the glue sniffers high whistling


Maybe that’s why I am happy when I clean cases. wink


LOL up

Re: What to use to clean an automatic trans case? [Re: Moparite] #2972847
10/10/21 08:58 PM
10/10/21 08:58 PM
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Originally Posted by Moparite
Glass bead/media blast always gives a nice surface look. Vapor blasting is the same process but with water instead of air.


I wouldn't go any near a glass or media blaster of any kind as the abrasive dust can get into the smallest openings/areas. Had a friend do his oil pan that was supposed to be sealed off. Even said he flushed it several times. Ate the bearings within 5 minutes of start up frown

Re: What to use to clean an automatic trans case? [Re: TJP] #2972854
10/10/21 09:41 PM
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Originally Posted by TJP
Originally Posted by Moparite
Glass bead/media blast always gives a nice surface look. Vapor blasting is the same process but with water instead of air.

I wouldn't go any near a glass or media blaster of any kind as the abrasive dust can get into the smallest openings/areas. Had a friend do his oil pan that was supposed to be sealed off. Even said he flushed it several times. Ate the bearings within 5 minutes of start up frown


If it had any baffles, then yes. Same as with most valve covers. But a plain pan wouldn't be a problem.

Re: What to use to clean an automatic trans case? [Re: PhillyRag] #2972863
10/10/21 09:59 PM
10/10/21 09:59 PM
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DAYCLONA Offline
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If you want it look original in texture and finish, see if you have someone that does dry ice blasting in your area......

Re: What to use to clean an automatic trans case? [Re: DAYCLONA] #2972890
10/10/21 11:17 PM
10/10/21 11:17 PM
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Originally Posted by DAYCLONA
If you want it look original in texture and finish, see if you have someone that does dry ice blasting in your area......


Nice👍


China is the enemy.
Re: What to use to clean an automatic trans case? [Re: 1972CudaV21] #2972915
10/11/21 07:57 AM
10/11/21 07:57 AM
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Castlegar, BC, Canada
That AMC Guy Offline
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I'm pretty partial to Easy-Off oven cleaner. The yellow stuff, not the new blue stuff, though, the blue can ain't terrible.

More Blue 258 004.JPG

Bloody Mary, Full of Vodka, Blessed art thou among cocktails....

Re: What to use to clean an automatic trans case? [Re: PhillyRag] #2972944
10/11/21 10:09 AM
10/11/21 10:09 AM
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Originally Posted by PhillyRag
Originally Posted by TJP
Originally Posted by Moparite
Glass bead/media blast always gives a nice surface look. Vapor blasting is the same process but with water instead of air.

I wouldn't go any near a glass or media blaster of any kind as the abrasive dust can get into the smallest openings/areas. Had a friend do his oil pan that was supposed to be sealed off. Even said he flushed it several times. Ate the bearings within 5 minutes of start up frown


If it had any baffles, then yes. Same as with most valve covers. But a plain pan wouldn't be a problem.


iagree But it had baffles. On a trans case ? I'll pass. Wonder if the OP knows anyone with a hotsy ?

Re: What to use to clean an automatic trans case? [Re: TJP] #2976554
10/20/21 04:16 PM
10/20/21 04:16 PM
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I'll second Easy Off.

Re: What to use to clean an automatic trans case? [Re: John_Kunkel] #2976629
10/20/21 09:19 PM
10/20/21 09:19 PM
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North Dakota
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Originally Posted by John_Kunkel
Case (and other stuff) cleaner.


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