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Old 06-07-2019, 02:06 PM   #3 (permalink)
IsaacCarlson
eco....something or other
 
Join Date: Jul 2009
Location: Colfax, WI
Posts: 724

wood hauler - '91 Ford F-250
Team Pontiac
90 day: 26.69 mpg (US)

Rav - '06 Toyota Rav4 Base
90 day: 26.52 mpg (US)
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No, it's a cooler, a BIG cooler.

The factory warmer is still in place to help with winter warm ups in -35* temps.
The cooler is cooling the oil enough that the oil is cooler than the engine coolant.
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1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
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