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Do transmission stop-leak additives work? And will any problems arise later on from their use?

I believe my 1984 Mercedes 500SEL‘s trans pan gasket and torque converter are leaking trans fluid, at about a quart a week. I plan on replacing the pan gasket, which should take care of some of the leak, but it‘s too expensive to get the whole transmission resealed, and I think it‘s leaking in other places, like the torque converter. If I use either the lucas or trans-x additive, will they fix all the leaks, including the pan gasket, and how well will that work? Or should I replace the pan gasket, then use the additives for the seal leaks in the other places? Is the additive fix permanent, or will problems (possibly worse) arise later on? Thanks.

Answer:

This Site Might Help You. RE: Do transmission stop-leak additives work? And will any problems arise later on from their use? I believe my 1984 Mercedes 500SEL's trans pan gasket and torque converter are leaking trans fluid, at about a quart a week. I plan on replacing the pan gasket, which should take care of some of the leak, but it's too expensive to get the whole transmission resealed, and I think it's.
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I will say that the stop leak additive will work in some cases but it does it by causing the seals to swell. Over time the seal will then fail and you will be back to square one. I would suggest replacing the pan gasket and then monitoring the leak and determine the best repair procedure to take

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