Installed factory cold front better mileage now

[Turbo Terry]

30f at night and 40 f high during the day here in Alaska. All four holes closed 204-206 f coolant and transmission 156f by dash gauge Fuel mileage seems to have went up considerably.

 

[Diesel85]

I'm considering getting one for my EcoD. For a little over $130, I think it's worth it.

I got one for my gas F150, and put it on in late November and take it off beginning of March here in Upstate NY. Makes a HUGE difference in heat output on the vents and warmup times. And a slight increase in fuel economy. Along with keeping the engine compartment a little more tidier from debris.