[JSH]

Originally Posted by rjgss

I think it’s losing coolant through the weep holes on the expansion tank when it gets hot. The lower tank is filled to top near those holes when hot and under tank shoes sign of coolant. I now run a little coolant in lower tank and will monitor. I don’t drive car much, not daily driver. I did just change oil and noticed a lower hose below that looked suspicious but wasn’t in mood to deal with it then

Just to compliment this post, my lower tank had too much fluid in it and was filled to about an inch from the top and it has taken me awhile to figure out that the fluid was expanding during operation and leaking out the two holes in the top of the bottom tank. As a result, I bought a $6 siphon and siphoned the coolant out of the bottom tank until it was at the cold fill line