problem with Bars Leak? 1999 Subaru Outback. Overheating randomly. Clearly a bad head gasket! I have a can of Bars Leaks. I feel like I have nothing to lose by following the directions and dumping this stuff in... Any pointers or experience??
it won't work, you need at least block sealer with sodium silicate [water glass] .. it's also available at drug stores by the quart.. I have seen it work, but have also heard horror stories about ruined blocks..
random overheating does not mean it's your head gasket. are you losing coolant. is there coolant in your oil or vise versa, does it run bad when its not overheating. it is possible. the random overheating could be from a small head gasket leak letting air in. it could also be a small intake manifold gasket leak. have you recently had the coolant changed if so it may need to be bled. you could have a thermostat that is going bad. there is so many things you need to check before you just say yeh it's the head gasket and anyway if you determine for sure it is the head gasket then just save the time and trouble and replace it instead of putting a band aid on it that may or may not hold up