Radiator Overflow Tank

[Ponysoldier]

Hey thanks now I understand.What threw me was
the 5 ton weight symbol on the front of the truck..
The total weight including cargo must be 5 ton
Or the symbol is wrong,oh shoot I dont know.
Seems to me a # 10 can with some fittings brazed
on would do the the same thing,or is it heavier than
that??
Patrick