Cool/Heat: Avanti coolant question

[JBOYLE]

Should there be coolant in the Avanti overflow or header tank?
There is none in mine, yet it runs cool...but I haven't driven it in very hot temps yet.

If so, how much?

[JDP]

Maybe half full or a bit more, too much and it will overflow when hot and expanded.

[StudeRich]

They did put the "Bleed" Port, "Wing Nut" drain fitting in the water manifold for a reason, the system should be bled of all air when filling, and as John said, the fill tank filled.