replying to 24Bit? , Mike Daugherty wrote: Encountering the same problem right now. Began over a year ago with a pin-hole leak very bottom left side corner of the radiator at a soldier point. This was manageable, requiring added coolant mix only once every month, and only a little to top of the radiator - temps remained on the low-end as usual.
Then last month in earlier Nov., we had a week-long below freezing in the overnight lows, which expanded the pinhole (coolant was primarily straight water by this time) (my error) to a substantial leak, requiring well over a gallon added each time I drove the vehicle.
So I replaced the radiator, and fixed the problem ... it seemed. I started the engine, and took a very close look under the front end, checking for leaks - there were none. This was Monday.
Vehicle sat for an entire day, not started or driven (Tuesday).
Fired the vehicle up, preparing to leave for my work, and noticed anti-freeze steadily dripping to the ground in a continuous flow. I couldn't see the source at first, so I shut off the engine, and got down to have a look up under the front of the motor.
It appeared that the leak was dispensing right from the front-most portion of the oil-pan lip just in front of the right hand front-most mounting bolt. I removed the bolt - nothing spilled from the hole, so it wasn't coming directly from the oil-pan itself, but wiping things down to clear the grime away, revealed nothing more - I couldn't find any rivulets of anti-freeze running down to the oil-pan from above it, and the hoses/circulation lines were all clamped properly, and dry.
I next examined the water-pump housing, and checked for loose bolts, and possible leakage from there - I found none.
Being that the leaking anti-freeze was clean and had no oil or other contaminates in it, I placed a 2 gal bottle under the leak to trap further liquid for re-use, and am taking a break from further attempts to find a solution, until I can locate someone with more knowledge in this than I possess.
I have read the above responses to the original posted query, and have taken it as far as pricing a replacement water pump, But I need to be absolutely 100% positive that this would be the correct fix to the problem, before I spend the little money I have, on yet another part to "chase" the problem.