Quote:
Originally Posted by radioranger
got to agree , up and down temps stress everything
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My radiator temps are always up or down depending on whether I am pulling hard up hill "pedal to the metal", or free falling down a big hill, so i imagine the radiator is designed to have this type of temperature fluctuation, the engines heat output is constantly fluctuating.
Although as said bypassing thermostat may not be appropriate, so if we leave that out engine is fine and will maintain efficiency.