[VWNate1]

How many pounds pressure cap are you running ? .

Always remember : the boiling point of plain water goes up 3° for each pound of pressure so few vehicles ever need more than a 3# cap .

Many can run fine with a marginal cooling system and no pressure at all but the coolant will evaporate as you drive .

Slowly but it's a thing to think about ~ I've driven across America with klunkers that couldn't take any cooling system pressure at all without leaking .