Something I thought of later: Like I said, I haven't noticed a difference in fuel economy when I plug in. However, if I drive the truck multiple times in a day, so the motor stays warm, or steadily driving on a trip, it seems to get a mile or two better mpg. While I'm sure the plug in heater does help, it is a long ways from the motor/tranny/axles being fully warmed up by driving.
Quote:
Originally Posted by ExplodingDinosaurs
... I plug my Dodge diesel in religiously. I put it on a timer so it does less time in warmer weather. I haven't noticed that it helps or hurts the fuel economy, but I haven't done a rigorous test, either. Without the heater it takes one to two miles to get as hot as with the heater. The dash screen will say between "< 100" (very cold night and parked outside) to as high as about 125 F. ...
|