I have an intermittent anti freeze leak on my 1994 S10 2.2 engine with 130,000.About every 6months or so it will leak a few cups of coolant then stop as quick as it started.I changed the water pump last year because it was leaking,but that's not where this leak is from. From what I can tell its on the drivers side about in the middle of the engine possibley behind the exhaust manifold. Its really hard to tell.It was leaking yesterday topped off it off drove it to work 15 miles now no leak. I got some dye to put in maybe that will help ID this leak.I wouldnt think a head gasket would intermittently leak. My AC compressor is dead so I may just remove it so I can get a better look.There has never been any sign of coolant in the oil or white smoke.This has been going on for more than 2yrs now.Any guesses?