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You would think oil pan heater pad would shorten the time for the ICE to get up to temperature and save MPG's. So I installed a KAT's heater pad #24150, 150Watt pad 4"x5". Has anyone looked at the underside of the CMAX? Very aerodynamic plastic job, they obviously spent some serious time designing it. You have to undo 5 screws to lower engine cover to get to oil pan. The oil pan has a 3"x6" flat spot which turned out to be a problem with the pad,it is an inch to wide. This caused the pad to cook the adhesive ,but it still works. I saw a 30 degree rise in WT temp on Scanguage vs outside temp. Two things I learned was Wolverine makes a Model 9 125Watt pad 3" in diameter which would work much better. Second the engine uses the oil pan to cool the ICE and I saw my temps up 10 degrees with it on there. This is counter productive when using Grill Covers. It is possible that 3" Pad would have less of an effect than 4x5 inch pad. It looks like there is a fair amount of cooling going on around the bottom of ICE. Keep learning new things all the time.