Chuckt
20+ Year Contributor
- 681
- 1
- Oct 17, 2002
i just changed my radiator yesterday because i had a radiator leak that i oculd easily see. After warming my car up , i let it sit and i noticed that after i turned my car off, the coolant tank/reservior slowly became more empty. if i fill the coolant tank while my engine is off or cold, it stays full, but after running it long enough to heat up, it sucks all the coolant out of the tank. there are no leaks on the ground of any kind. Where is the coolant going?

, it seems like it would be filled already but OK!