What would happen if you put stop leak in the heater core hose or radiator when
2008 Pontiac G6

What would happen if you put stop leak in the heater core hose or radiator when

(2008 Pontiac G6)
Water is draining from floorboard on passenger side
Tags: pontiac, g6
1 answer & 1 comment
Popular Answer
on November 07, 2019

First it needs to be confirmed whether it is WATER or ANTIFREEZE !

WATER is from a clogged air conditioning drain.

ANTIFREEZE is from a leaking heater core.
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on November 07, 2019

Adding ANY KIND of “stop leak” is a waste of time and money - the only reliable repair is mechanical repair..

I’ve tried em all over the many years of being in the automobile repair business - never had nary one of those mechanic in a can products actually fix anything!

IF the ANTIFREEZE leak actually stops after adding a stop leak product - the leak will shortly return ~ FACT - - and where will you be at that time ?
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on November 07, 2019

First it needs to be confirmed whether it is WATER or ANTIFREEZE !

WATER is from a clogged air conditioning drain.

ANTIFREEZE is from a leaking heater core.
Sign in to reply
on November 07, 2019

Adding ANY KIND of “stop leak” is a waste of time and money - the only reliable repair is mechanical repair..

I’ve tried em all over the many years of being in the automobile repair business - never had nary one of those mechanic in a can products actually fix anything!

IF the ANTIFREEZE leak actually stops after adding a stop leak product - the leak will shortly return ~ FACT - - and where will you be at that time ?

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