I believe you're talking about the seal behind the coupler on the front of the transmission.If so, I would not trust any additive to slow or stop the leak. You need to replace the seal, and while you're at it, replace the seal that is behind the belly pump coupling. If it's a plain M, not a super, you do not have to split the tractor, but you do have to remove the belly pump, and the entire clutch assembly, (pressure plate, disk, and trans. shaft carrier) as that's the only way the trans. shaft will come out. ONce all that stuff is out of the way, you will have plenty of room to get the couplers off and replace the seals. I would also suggest that you rplace the pilot bearing and maybe even the clutch. To me it doesn't make sense not to replace these parts in a machine this old. Check the archives. LOts of valuable help here on dissassembly.
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Today's Featured Article - Trenching With a Plow - by Staff. Introduction: This interesting information came from one of the discussion forums here at YT. We thought we should place it up front so it could be read by anyone interested in putting old iron to work. [Editor] I tried something new today, and it worked so well I thought I should post it - in case it might help someone else. I'm running 100 yards of 4" drain pipe from the gutter downspouts of our house to a pond down the hill. This should hel
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