Changing trany oil

Joined
May 22, 2009
Messages
17
Location
San Antonio, Texas U.S.A.
When you change the oil on the transmision i know you need to put a new gasket, it comes with the filter, weeee! My question is, do you need to put some gasket sealent on it? Sanku!
 
Joined
Sep 10, 2002
Messages
705
Location
Bismarck, ND
NO, most applications do not require a sealant on the gasket itself. The guy who does the job the next time will appreciate you not using anything on the gasket. Is your gasket cork or rubber and what is this on?
 
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Joined
Jan 10, 2008
Messages
4,998
Location
Milwaukee, WI
No sealant on it. Make sure you get the surfaces the gasket will seal clean. Usually not a horrible job, but depends on the application.
 

Kestas

Staff member
Joined
Jun 4, 2002
Messages
14,067
Location
The Motor City
If it's a thick rubber gasket, it may be reuseable. I'm beginning to see this more often on modern vehicles.
 
Joined
Aug 8, 2007
Messages
786
Location
Indiana, USA
No, no sealant on the gasket but it doesn't hurt to wet it with a film of tranny fluid to make sure it doesn't get bunched up. The most important thing to keep it from leaking is to keep the surfaces on the tranny, pan and gasket clean and to correctly torque the pan bolts. Make several passes around the pan alternating between even and odd bolts as you snug it down a little at a time.
 
Joined
Sep 5, 2006
Messages
19,479
Location
Chicago Area
Watch out when you tighten a cork gasket. They squooqe out and break and leak rather easily. A sealer is always a safe bet, but will make it harder to remove later. It's your car, and your decision. To bulletproof it for no leaks, clean everything really well and dry, and use a little premium RTV on the gasket, then assemble it and let it cure before filling the trans. You probably don't NEED it, but it's your call.
 
Joined
Sep 28, 2002
Messages
39,801
Location
Pottstown, PA
On some sloped pans I use sealer ..but they've also been the reusable type that are metal reinforced. It's easy to get those off. Otherwise, any paper gasket gets NEVERSEIZED (thermostats, etc.) I'm lazy. I really don't like cleaning up the surface ..even if it's 5 years from now.
 
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