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Transmission Pan Sealant Thread

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  #1  
Old 10-13-2013, 11:41 AM
bigaaron bigaaron is offline
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Default Transmission Pan Sealant Thread

I need to know what you guys use. I need a good transmission pan sealant. Seems like everyone i look at has some sort of one-off which always leaves me doubting its capabilities. I tried calling the trans shop and they use some sort of industrial use sealant that they can only procure - So what do you use?
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  #2  
Old 10-13-2013, 11:58 AM
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I've always used Ultra Copper from Permatex. Can be bought at any auto store.
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Old 10-13-2013, 12:05 PM
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I just use a good quality gasket. The nice, rubber (viton?) re-useable fellers. No sealant at all.
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Old 10-13-2013, 12:08 PM
AtomicDog AtomicDog is offline
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Pickup MOPAR transmission pan gasket 2464324AC and install it without sealant. I never use any added sealer transmission pan gaskets.
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Old 10-13-2013, 12:28 PM
mibzzer15 mibzzer15 is offline
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I use like the cork "felpro" type gaskets all the time. When at work, we never use rubber gaskets unless that is our last option. In our experience, rubber gaskets tend to leak a lot more often than anything else.
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Old 10-13-2013, 12:56 PM
Arde Arde is offline
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Rubber gasket, no sealer, no leaks.
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Old 10-13-2013, 01:57 PM
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felpro from advance. no sealant.
the filter/gasket kit from advance with the rubber gasket is also very good.

make sure the pan surface is flat. turn the pan upside down on the workbench and tap out any dimpled bolt holes with a ballpeen hammer.
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Old 10-13-2013, 04:35 PM
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Quote:
Originally Posted by dhvaughan View Post
felpro from advance. no sealant.
the filter/gasket kit from advance with the rubber gasket is also very good.

make sure the pan surface is flat. turn the pan upside down on the workbench and tap out any dimpled bolt holes with a ballpeen hammer.

+1 on taping on the bolt holes to flatten the pan, and rubber wix gasket that comes with the filter or a felpro rubber gasket, or the mopar reusable gasket, FTW. Install new gasket , torgue to 13ft pounds and recheck torque a couple days later and at every engine oil change. Check VC bolts too at every oil change.
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Old 10-13-2013, 04:38 PM
bigaaron bigaaron is offline
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i tried all those options; rubber gaskets, sealant, no sealant, cork, EPDM, even special ordered a viton. I used the cross bolt pattern recommended by Hayes and Mopar. Checked and double checked torque spec, even had my torque wrench calibrated. New pan, old pan, checked all surfaces on a flat slab table - all leaked. Cleaned all surfaces by hand using red scotch pad, no sandpapers, power tool, pnuematic tools, or even hand tools - minus the gasket scrapper - all leaked.

Kejobe - i almost picked up the ultra copper per O'reilly's salesman - it states do not use on rubber gaskets. See what I mean? Hence the question. I guess I am retarded

Last edited by bigaaron; 10-13-2013 at 04:41 PM..
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Old 10-13-2013, 05:15 PM
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Something is obviously not right, because no sealant is required. But, a thin bead bead of regular old blue rtv should work fine. Are you sure the leak is coming from the pan itself? Somehow I dont think so.
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  #11  
Old 10-14-2013, 01:44 PM
bigaaron bigaaron is offline
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i thought the same thing, so I took it to a tranny shop. They even checked it with a machinist square all was correct. Tranny shop ended up sealing the pan also. The logic behind this question is simple. I am goin to do a fluid and filter change and wanted to know which sealant would work. Guess I opened a can of worms.
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Old 10-14-2013, 05:02 PM
80Adventurer150 80Adventurer150 is offline
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Get the Mopar gasket IMO.
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Old 10-14-2013, 10:40 PM
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i had what appeared to be a gasket leak.
it turned out to be the neutral safety switch just above the pan. i think i used a 1-1/16 oil pressure socket to tighten it. or maybe channel locks?? there's a few other seals including linkage that could fool you.

if it keeps leaking spray/wipe it off with brake cleaner and follow the wet spot.
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Last edited by dhvaughan; 10-14-2013 at 10:42 PM..
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  #14  
Old 10-15-2013, 09:14 AM
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Quote:
Originally Posted by mibzzer15 View Post
I use like the cork "felpro" type gaskets all the time. When at work, we never use rubber gaskets unless that is our last option. In our experience, rubber gaskets tend to leak a lot more often than anything else.
I've never had a rubber one leak with no sealant. Although I keep mine serviced at 30k. I think the problem is getting the pan scarred up when scraping off the rotted mopar one.
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Old 10-15-2013, 09:48 PM
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Quote:
Originally Posted by dhvaughan View Post
i had what appeared to be a gasket leak.
it turned out to be the neutral safety switch just above the pan. i think i used a 1-1/16 oil pressure socket to tighten it. or maybe channel locks?? there's a few other seals including linkage that could fool you.

if it keeps leaking spray/wipe it off with brake cleaner and follow the wet spot.
+1 - what I'm hearing about this situation makes no sense. If the pan and trans mating surfaces are flat, there should be no leak, as the gaskets mentioned are thick enough to fill the gaps, along with minor imperfections. Sounds like the leak may be at the neutral safety switch, the selector shaft seal, the transmission filler tube seal and/or the front pump seal behind the converter.
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  #16  
Old 10-16-2013, 10:47 AM
bigaaron bigaaron is offline
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there is some confusion here. Currently I have no leaks, but am getting ready to do a tranny fluid/filter and always notice the tranny shop, after my futile attempts, ends up fixing the pan leak utilizing sealant.
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  #17  
Old 10-17-2013, 08:07 AM
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OK, let's gain some clarity - are you stating that when you took your vehicle in to get a trans fluid change, you got it back with a leaky transmission pan and you then returned the vehicle to them and they fixed the leaky transmission pan by using sealer on the trans pan gasket?

Also, as a follow-on question, is the place changing the fluid by dropping the trans pan and draining it or sucking the fluid out via the dipstick tube?
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  #18  
Old 10-17-2013, 12:13 PM
bigaaron bigaaron is offline
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i attempt, without sealant, to torque the pan to stop it from leaking after doing the items in the aforementioned post and I end up taking to the trans shop to repair the leaking gasket.
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  #19  
Old 10-17-2013, 01:52 PM
dodge dude94 dodge dude94 is offline
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I've got a rubber gasket on mine and haven't noticed any leaks yet.


Minus the leak in my cooler line.
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  #20  
Old 10-31-2013, 08:05 AM
bigaaron bigaaron is offline
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so i show up at a different local tranny shop that I have recently befriended and had them install a slip in band and band anchor including a rubber gasket on the pan - thay said they do not use rubber gaskets and used a cork gasket w/ no sealant - it went back yesterday to repair the leaky pan. I bet I will be headed back again.
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Old 10-31-2013, 08:05 AM
 
 
 
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