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Old 09-08-2011, 07:35 PM
Yak Yak is offline
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Join Date: Aug 2009
Location: San Antonio, TX
Posts: 1,711
I'm by no means an expert, but wonder about the specific temps used and rationale.

For example, the manufacturers may choose thermostats and temps that are a bit cooler than expected to compensate for unexpected conditions. They might want to stay away from 100c/212f in case someone runs water for some reason.

If the goal is higher MPG and if higher temps can get you there (more or less safely), are there other things that can complement it? Like blocking part of the radiator in order to reduce drag, or an electric fan with a higher set point so it stays off until a higher temp?

The linked thread starts off with warnings about oil temp. Would you add instrumentation to monitor that?

I believe you can improve mpg at the margins by some vehicle mods, but I think the biggest factor is still the right foot.
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