Hi. Been a long time since my last post. I hope everyone is well.

I'm about to give my truck (1951 3100, all original old stuff, no modifications), the most rigorous workout she's had since I've had custody, and that is to haul a yard of topsoil form the dirt place to my house. In prep for that, I'm doing the oil-change procedure that Hotrod Lincoln suggested, which is to warm up the engine, add two quarts of diesel fuel to the crankcase and let it idle for 15 minutes, then drain. While under the truck I took stock of my fluid leaks, and I'd like opinions on these, please. Moving from front to back:

1) Crankcase oil drain plug - Surprisingly, no leaking.
2) Flywheel cover drain hole - Surprisingly to me, leaking/dripping what I assume is motor oil.
3) Transmission gear-oil drain plug - A small leak. I'm going to just tighten the plug.
4) Rear of transmission where propeller shaft inserts into the tranny - A leak that's been going on so long that the drips from the support bracket have solidified into grease.

The only one that surprises me is #2, the flywheel cover dripping oil. Should I be concerned about the source of this? Any suggestions on the transmission leaks? I think the rear connection (propeller shaft into transmission) has a rope seal that maybe needs replacing??

Thanks for your thoughts. I have pictures, but you all have probably seen these leaks a thousand times, so pics may not be helpful.

DJ

Last edited by Ol' Red; 09/13/2020 3:51 PM. Reason: Added vehicle description

DJ
'51 Chevy 3104 1/2-ton 216