Quote:
Originally Posted by mikeyjd
It was getting a bit on the warm side today so I opened about 10% of the grill in the middle bottom section. After that it was holding slightly warm but doing well.
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If the grille block is affecting the final coolant temp (after warmed up) at all then you've overblocked it. You want the thermostat alone to determine the final temp. If it isn't you may not be doing any damage (yet), but you're playing with fire because the thermostat is wide open and you can overheat in a hurry if you're not careful.