Our Sweet Spot is 68 MPH. At 65 if we come to a slight hill, the engine will drop out of cruise control overdrive and downshift. At 68 it takes the hill like it ain’t even there.
Most trucks have a sweet spot where the engine runs efficiently.
'02 F350 7.3PSD CC LB DRW, Reese 20K Hitch, Brake Smart, AirLift, C-betr mirrors,
'04 Everest 343L, TrailAir, RotoChoks, Wayne's stabilizer
Toys: Fold-Away Pet Carrier, Thermos Grill 2 GO
For more info, visit Our RV web site.
I run the same tires and highest posted speed limit on the Interstates in the states I tow in, (where i normally tow) NC, SC, TN, VA and WV , is 70. Some interstate speeds are 55-65. Of course secondary roads are "normally" 55-60 mph...I get my best mpg around 60 mph..I normally tow 55-62 mph. Don't arrive that much later than those towing at 65-70 and I get pretty good mpg and I believe it's also a little safer, but that's just my opinion. I'm not in any huge hurry and I've never held up traffic...
Jim & Kathy
2013 Dodge 3500DRW Longhorn 4X4/CC/LB/Aisin tranny/4:10/Cummins: 385HP/850TQ
06 HR Presidential Suite 37RLQ/ 4 slide/ dual pane windows/Winegard SK3005 Satellite/Splendide XC2100 W/D
Boxers;Buddy& Sheba II
USAF 71-75 Nam Vet
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