what is your mpg?

Limited at 65 and I average 7.9 to 8.


Mikeeee

 

Last trip:

- 79,600 lbs
- Idaho to Atlanta to Charlotte, NC. Went the back way through the Teton mountains
- 5 mph over the posted limit usually, or right at the limit, so 65-75 most of the trip
- Averaged 5.8 mpg
- 55k miles on new motor, 12k miles on new transmission. CM870 ISX / 13spd Eaton Fuller

One thing I notice is that when I get over into MO and farther east, Loves sells that fuel claiming to have "up to" 20% bio material made from "plant matter". In other words, it's 20% used motor oil, probably. Whatever it is, I get a bad fuel knock and lose about .75 mpg.

 

Run refer, usually maxed out on weight, and getting a little over 7mpg, run 65mph, and 48 states.

 

At that kind of speed and weight, that's about what I'd expect to see.

The rolling resistance of your tires decreases as the tread wears down. You're getting better mileage from them now than you did when they were new.

'09 Cascadia, limited to 65, but run in the fifties when time allows. Trailer with wide singles and side skirts, 75-78,000 lbs, I95... I get as much as 8.5 mpg at 54 mph. Trailer with mixed bag of virgin and retread duals, same weight, 65 mph, in the PA mountains... I'm down around 6 mpg.

 

I'm calling bs on some of these. Unless you are driving a straight truck or are driving at Prime speeds, 8-9mpg above 60 mph just isn't happening. The top man in our fleet is getting around 9 mpg driving 52 mph!

Here is my experience
2009 KW T2000 CAT C15 ACERT @ 62 mph: 6.2 avg
2011 KW T660 Cummins ISX @ 62 mph: 6.9 avg
2012 Freightliner Cascadia @ 60 mph: 7.1 avg @ 68: 6.0 avg
2012 Peterbilt 386 @ 64mph: 7.1 avg
2014 Peterbilt @ 66mph: 6.44avg (new motor.)

All pulling a reefer and 95% heavy loads (75,000+) All the trucks listed are modern, well maintained, and designed for maximum fuel efficiency. 85% of the trailers I have pulled have had some type of aerodynamic device on them. So if some of you aren't lying, then I apologize, but please do tell how one gets 8 mpg at 65 mph with a loaded trailer during realistic driving situations?

Remember...just like that o/o saying that he's making millions...you are only lying to yourself.

 

We're all slaves to our appointments in the reefer world. It makes little sense to hammer down the road at 70 mph if 55 will get you there on time. And you get to pocket the fuel savings.

 

I agree, but tell that to 98% of the drivers out there that are running 70+ mph

 

I got 8 MPG once. I rode a strong cold front from Cheyenne down to Houston with 55k gross. Bang up MPG's are possible ON SOME TRIPS. Problem is, some brag on their optimal trip and stop monitoring the real world ... the head/cross winds, the trips from sea level up to 4,000ft, the load of fuel that sucks for MPG that you get here and there, the APU that sucks more fuel then it should every minute they're parked, the trip that had 1 hour of stop and go traffic, the effect of tire wear and make, the effect of slightly out of alignment trucks and trailers, etc. But if you're pulling real loads across the 48 and Canada, and getting a long term average of 8.0 MPG plus, then God bless you. IMO, there is a BIG difference between averaging 65k and 75k in terms of affecting fuel economy.

 

You put 70% of all drivers in a room, and you have an IQ of lukewarm water.

 

67mph and 4-5mpg car hauler