Real world MPG

Yeah, I would bet you could beat that 4.7 average. That high idle time from the previous owner would really skew the mpg numbers. Compared to most of us, that bull rack is really working against you for aerodynamics more than our nice, smooth sided trailers. You must be doing something right to pull off 7 mpg before with a bull rack running a lot of two lanes and rural. I also get off the nice 4 lanes quite frequently.

 

####. I am jealous. when I used to tell other drivers 8-10 years ago that I was getting 6.5 ave m.p.g. in my intl coe with a 11.1 365 h.p. ser 60 det, they would not all believe me. m.p.g is the same as then.

 

My 2002
Peterbilt
379EXHD
63 standup bunk
Cat c15
550hp
18spd

Towing a step deck 80,000 transcanada hiway from Winnipeg to Regina 6.4 mpg

 

2008 Pro Star
485 Cummins
13sp Double O/D
3:73 rear
Michelin HT 11r 22.5 on Alum

Pull 48' flat with spread and 98" high rolling tarp system
Usually loaded around 77 - 79,000 outbound, anywhere from 60-79,000 inbound.

Avge 6.9 keeping it around 62/63 mph, 1450rpm. Lot depends on the wind - the soft side is like towing a sailboat, and mpg can plummet to 4 in heavy x-wind. I've seen over 7 if loaded around 70,000 back from Dallas to Detroit.
When I hauled open-deck (with tarps) averaged 7.4

 

2004 Western star
C16 600hp
18spd (22918B)
4:33 rear
11R 22.5

Pull 5 axle flat top B train, steel and timber loaded 90% of the time 110,000lbs.
Avge 4.1 around 50-55 mph,in the hills can get as low as 3.7 best its ever done 5.1.

How can you get 7mpg??
Cant even get that with a empty tractor

 

Its that 4.33 rear. At 55 your engine is spinning at what mine is at 68. That and the fact that a Western Star has the aerodynamics of a brick, lol!

 

1995 whitegmc WIA aerocab
3406E 475HP 1750TQ
RTLO16713A
DS404 with 3.55
445/50 22.5 X-ONE HT on drives.
I look for loads in the 20-35000 range.
6.8 for the last 3500 ml with 8 to 10hrs idling per day due to heat.
7.7 with out idling.
61 to 62 at 1350rpm.

 

I drive a brick.
06 W900L KW
550 Cat Tuned by PDI
3.55 rears
18 spd.
loaded 65% of the time sometimes to 112000
average 6.3 mpg
The worst I ever see is 5.8 I have almost got into the 7s with a couple of 6.9s.
I run the speed limit + 5 most of the time.

 

'03 T600, 550 Cat, 13sp, 3:70, 11r22.5 no roof fairing pulling dry box avg gvw 76,000 lbs. Lots of hills and mountains TN, VA, KY, NC, east coast etc. Very little idle time whatever speed I feel like driving usually no more than 5 over except on Fridays maybe more then. 5.7mpg..... In flat areas, TX, OH, Midwest it will do better than 6.0 but 5.7 is my avg.

 

dont feel bad c16Kiwi with a wagon running the way these guys want u to (speed/wieght) i feel like i'm robbing someone at 5.7 .