Join Date: Apr 1999
Location: British Columbia, Canada
Feedback Score: 0 reviews
Re: Towing in Overdrive with E40D ????
I agree with Bigred on this one! Get yourself a good sized tranny cooler (most come with a small one) to keep the fluid as cool as possible.
I've had a transmission temperature fluid gauge for some time now, and that way you always know just how hot it really is.
Towing my 26' travel trailer up some of the steepest hills around, I've never seen my gauge over 195° F, and you certainly don't want to "boil" your fluid!
I always tow in OD, but in saying that, I've gotten to know my truck real well, since I've owned it for nearly 10 years now, and I know when to take it out of OD, by the RPM the engine is at. With my larger injectors, I can tow up most hills, even at a 6% - 8% grade in OD, but I DO watch my Pyrometer along with my RPM's, and lock out OD if my speed starts to slow down.
So, with a set of gauges, it makes the job of locking out OD much easier, along with listening to the engine...as you'll hear when it starts to "labor" which is when its time to take it out of OD.
2009 F450 4X4 Superduty King Ranch
6.4 Diesel, 4.30's.