New E450 with tow/haul question
My old Winnebago E350 4R100 had overdrive and I would turn it off when climbing a steep grade or go down a long grade for braking. What's the difference with the Tow/Haul on the 5 speed. Same usage?...
Forum Discussion
I have relatively light 25' class C and use tow haul primarily as braking aid on mountainous downhills. Otherwise I find the shifting excessive (sometimes on brief brake applications) and forces needless high RPM. I can see in some scenarios where there is potential to keep transmission cooler by using more mechanical gearing and less torque converter. OTOH I have never heard of any excessive (IMO) transmission temps when not operated in tow/haul-and of course the PCM has the data and can shift transmission according to temperature if they're excessive.
Bottom line: for me engine braking only when needed. I have no concerns about transmission life when serviced properly. Also E450 has more favorable axle ratio for reduced transmission heating than the E350-lower overall gearing.
Bottom line: for me engine braking only when needed. I have no concerns about transmission life when serviced properly. Also E450 has more favorable axle ratio for reduced transmission heating than the E350-lower overall gearing.
