AQ131A... Losing coolant...

[maine1963]

I have been searching for a leak in my cooling system. I have to add about 1/2 gallon of 50/50 antifreeze coolant - water to the expansion tank after 2-3 hours of operation.

1. Checked the oil (dipstick), no emulsion.
2. Checked bilge, no sign of antifreeze.
3. Not overheating.

Any suggestions?

Many thanks to this board! It is invaluable

 

[Nick Shurtleff]

I'm having the same issue. Did you ever figure it out?