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    1. #11
      Join Date
      Oct 2011
      Posts
      696
      Don, I tried to prevent air bubbles by filling through the upper radiator hose that way the block gets coolant first and pushes out any air bubbles through radiator as it rises. I will also try your method of raising the front higher than the rear and squeezing the upper and lower hoses.

      What coolant temp should I be shooting for? I have the stock 190 deg thermostat. I read that normal operating temps on ZL1s hover between 200-210. That’s basically what I had.



      Also after I shut the engine down the fans kept spinning and slowly came to a stop, I know that’s normal but they were making a high pitch sound. Is that normal? Or the high pitched sound is because my fans were running in reverse?






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