....and the ECM barely gets into closed loop...so ALWAYS running on the rich side of the engine management block.
Keep your t-stats in the 195 range. If you are having problems keeping the engine cool, then you have other problems in your cooling system.
First item I would recommend - removing the inefficient engine driven fan and replace with a thermostat controlled single or dual electric fan.
Second - replace your radiator with a new, aftermarket, aluminum, high efficiency.
Third - use distilled water in your cooling system.
Fourth - use a water wetting agent - you might be surprised.
5th - aftermarket aluminum or steel higher efficiency water pump.
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