The is not relevant to this particular thread but the Block Sealer/Water Glass is also clamed to seal leaks where the leak goes from inside the Engine into the Coolant like combustion gasses getting into the Coolant.
It also has particles of stuff in it a least the Bar Block Sealant I used looked like it had copper colored particles.
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84 300D, 82 Volvo 244Gl Diesel
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