Transmissions and Drivetrains
Air Conditioning and Coolant
Oldsmobile Aurora

Do transmission sealers work?


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Wiki User
2015-07-15 20:47:37
2015-07-15 20:47:37

If the transmission leak is visible from the outside try the RIGHT STUFF gasket maker. It can be purchased at NAPA auto parts. It starts to dry in one minute and is resistant to trans fluid. Do not put this material inside your transmission. Apply only to the outside of the trans.

my '94 Camry with 220,000 miles was leaking fluid. i used Lucas brand transmission sealer it fixed the problem .I'm at 268,000 miles now. good luck

I have had good luck using JB-Weld for cracked housings. Be shure to drain enough fluid from the trans so that the leaking stops. Clean the area around the crack with dishsoap and water, dry , scuff with sandpaper, and apply the JB-Weld.It takes about 12 hours to cure fully. Top up your trans and your'e ready to go. =o)

we have a 89 Mazda 323, auto tranny, that was "leaking from jus about everywhere it could" according to the shop. i put in some prestone brand Stop Leak for transmissions, and bingo, it hasn't leaked a drop for almost 500 miles now, and works perfectly.


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Yes, sealers do work. I used a sealer on a 1998 Mazda 626 and the ac has been fine for the last 3 years. The sealers only work though if the leaks are tiny.

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At best, they're a temporary stopgap measure until you can get the gasket replaced.

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I've had very good luck using power steering sealers especially on Ford products. If the hose or steering rack is not pouring out fluid, you may have good luck with it.

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City Sealers are employees responsible for checking standard weights and measures of businesses.

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They do as a temporary fix in some cases. If it is leaking slightly chances are it will work but if you have alot of leakeage I'd say you go get it fixed.

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