Seat my block leak immediately
I use the BLUE DEVIL according to the instruction on 1967 Mercedes 250SE L6 engine, poured into cold radiator and idled for 45 minutes. I noticed after a few days, the creamy color oil in my rocker cover as well as on my dip stick has all disappeared. And the engine is running a lot better after this process. Incidentally, I also discovered after the pressure in the water was allow to build up, I had to change my radiator cap and my water pump, as water was leaking from these areas due to higher pressure of the water.
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