I have a strange coolant leak. Can't find the source. Could see dripping off from passenger side of oil pan this morning. Drove to garage, no leak. Drove home, no leak. 3 hours later, dripping. Hoses seam ok.
If the water pump is bad, wouldn't it leak out the little hole in the housing? Anything behind ( under ) the alternator mount that can leak?
And, yes, I refilled radiator.

__________________
1984 MB 300SD Turbo

Rad or cooling circuit pressure tester may help find the leak. Make sure to test when you think a leak is normally active. It sounds like when things heat up the leak ceases.