cucvrus
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A few of these points are fact, and nothing is infallible. I never seen more then a drop of oil beneath the truck after running your M1009 and letting it sit for days. I put clean cardboard under vehicles to find hard to find leaks. At the age of a CUCV nothing short of a complete teardown of the engine is going to prevent leaks. If you start fixing 1 you may as well pull the engine and change all the gaskets. This costs lots of time and money. The yoke on the drive shaft is probably the out put shaft leak. It has a plug cap in he end and they leak on occasion. Clean the inside U joint side of the yoke and use a sealer. Or purchase a new yoke and press a new U joint in the drive shaft. I will not put myself in this scenario again. Good Luck with the truck. Quick question is the truck running again? I done nothing to the engine and it drove 6 hours after I changed the sending unit in the fuel tank. The fuel gauge works and that was the entire point of my pulling the tank to begin with. The transmission leak I can't explain. I can't see it. Is it a shift linkage seal leaking? I don't know. Take Care and I hope you have a complete recovery.