I tried Bars Stop Leak and K Seal, both widely recommended for stopping leaks, though not recommended by any of my mechanics for the coolant system of an LR3. Neither worked because the source of the leak was a long hairline crack in the intake manifold:

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Pretty typical busted LR plastic cooling system part, none of which can be plugged with stop leak or repaired, and must be replaced.



Quote Originally Posted by mearstrae View Post
I would think it's either the back of the cylinder head or the the intake manifold. I don't think there are any freeze plugs back there. Either way maybe some Nano Sealer might be a quick fix.

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