Apr-20-2015 11:10 AM
Apr-21-2015 01:26 PM
Apr-21-2015 10:17 AM
Apr-21-2015 07:55 AM
Apr-21-2015 07:38 AM
Apr-21-2015 07:06 AM
Apr-21-2015 06:03 AM
wolfe10 wrote:2oldman wrote:
Downshifting before the hill is easier on the tranny.
Would like more information on that one-- this is an Allison 3000 series. Torque converter is locked in all higher gears.
The only reason I would downshift (down arrow) is if the transmission in hunting between gears or you are overheating.
The OP is doing it EXACTLY correctly (per Cummins): As long as you are not overheating, let RPM lug down to peak torque RPM before downshifting.
Apr-21-2015 06:03 AM
Apr-21-2015 05:40 AM
WILDEBILL308 wrote:
Lots of interesting replies. I find it interesting that no one mentioned EGT temps when climbing hills. You can have dangersly high EGT temps long before your water temp goes up.
Bill
Apr-21-2015 04:17 AM
Apr-20-2015 08:00 PM
Apr-20-2015 07:06 PM
wolfe10 wrote:Actually, my F450 was a 7.3L PSD.
I agree with you, driving a gas rig, particularly one with a high RPM engine such as the very good Ford V10 is VERY, VERY different than a large displacement, turbo, inter-cooled diesel with Allison transmission.
Apr-20-2015 06:35 PM
Apr-20-2015 06:19 PM
Apr-20-2015 05:34 PM