anti freeze backing up
water backing out of over flow. i've changed the thermostat, put n new radiator.
and still it backs up within 15 min, of driving. has anybody had this problem. 1993
vw passat glx vr6 eng.
hey check the water pump. water could be broken and not flowing the coonat right to its backing up
thanks d, im gonna order the mechanical water pump.
Heater core could be plugged full of scale. Try flushing it out with a product like Prestone Super Flush
Is it overheating? If so, that opens up several other options. If not genuinely overheating, then the head gasket is leaking or the head is cracked pushing air into the coolant and then out the overflow.
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