You know the ones, you flush your coolant system, add the magic sauce and it seals the leak.

Anyone have any experience with these?

Well owning a repair shop I have had people try this. First off once you buy this junk thy have your money and laff all the way to the bank.
It goes with pet rocks and othe junk people will try anything to get a cheep repair. Get it dun right. Yes I know it cost but better get it fixed right then blow the engine.

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