Desert Captain wrote:
I too have a V-10 E-350 {2012}, Class C. I bought the Scan Gauge specially to display trans fluid temps. Without that info most folks have no clue just how hot their trans can get especially when not utilizing your Tow Haul mode. Engaging it, even on a seemingly slight grade, can drop your trans fluid temps 12 to 15 degrees in just a couple of miles.
Most folks do not use T/H nearly enough and that can easily lead to premature transmission failure. The Scan Gauge does so many things well at a very reasonable cost I cannot imagine running without it.
For the record I run with mine displaying trans fluid and coolant temps along with real time and average mpg. You can easily adjust your display to any one of a couple of dozen displays but those four work well for me.
:C
Thanks Desert Captain - just to be sure, do you mean that you engage the tow/haul when you are pulling a grade, even when you are not towing? Since we will be going up and down some mountain passes (but not towing), if I should engage the tow/haul, because it will keep the transmission cooler, I want to do that.