What is the best way to completely flush coolant from an LS engine block? I had put dexcool antifreeze in it and only ran the engine for a few minutes. Have been reading that the Dexcool can cause potential problems and most guys seem to be switching back to the Prestone Green. I had to take the radiator out to weld a bung onto it so i flushed that out real good and drained some of the block from the hex plug on the drivers side of the block. Heater system hasn't been hooked up so thats still clean.
Thanks,
Keith R
Thanks,
Keith R