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New Coolant Temperatures - Race to the Top?
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Post New Coolant Temperatures - Race to the Top? 
What is up with some manufacturers the race to higher and higher coolant temperatures?

I just browsed RockAuto's catalog looking for thermostat temperature ratings and have seen thermostats of current models of Mercedes:212F, GM:207F, Chrysler/Dodge:203F

Meanwhile Ford and Toyota are still using 180F thermostats and Honda even as low as 170F. VW/Audi/Porsche are using 189F.

OK, yes, I get it, economy and emissions.
BUT, if Ford, Toyota and Honda can do it, then why can't or won't the others?

On a related note, on top of all that these hot new engines are supposed to use 5W-20 oil. To me this defies everything we ever new.

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Oh and dont forget the increased oil change intervals. That "annual oil change"....... I think the engine replacement business must be booming..

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