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Old 03-29-2018, 07:33 AM   #10 (permalink)
Ecky
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Join Date: Dec 2011
Location: New Zealand
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ND Miata - '15 Mazda MX-5 Special Package
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Quote:
Originally Posted by oldtamiyaphile View Post
A hypermiler's radiator fan should never run.

Only time mine run is in the middle of summer with a full grill block - even then only really if towing. In normal driving the thermostats rarely even open fully.
My engine has a water jacket on the exhaust manifold to recover extra heat and aid in warmup. While moving on level ground it doesn't come on, sure. But, Vermont is a mountainous state. Even if my radiator fan doesn't come on 95% of the time, I still want to have it for that other 5%.
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