Here's a weird one. I'm working on a resurrection, and I discovered a leak at the 14mm plug in the sump strainer cover. Leaked about a teaspoon per day.
I know what you're thinking: He's crazy, must have actually been a leaking gasket, or something else. Nope, it was definitely, 100% the plug.
I suppose I could've gotten the leaking cover super-clean and applied JB Weld to the inside. But, I opted for tossing and replacing.