Is there a scientific chart showing how much fuel you save by going slower?

i run 63 mph and on elogs...

 

Running below 60 all the time would be too torturous for me. 65 mph is something I could live with. But yes, slowing down from 70 and up to around 60-65 when the fuel was 4$ per gal saved me 200-300 on a 4500 miles trip. But the key factors were always the weight and the wind. But so what, if the freight revenue paid on that trip could have varied up to a $ 1000 more or less.

 

I've been always full of admiration for those with >7.00 mpg results. In my 15 years career I don't think I even once went up above 7 mpg on a 10 000 miles stretch. Maybe because I did run across the country, mountains and winds and half of it was with a heavy reefer. But I'll try to stay on the eastern side of Mississippi river in 2017 and see if it makes any difference.

 

WTF does his log book have to do with this thread. It's up to a boneified inspector to bust him on it not other drivers. Besides if you really understood a book you would calm down about the way he is CHEATING

 

The main advantage of the scangaugeKR over the scangaugeD is that the KR will display how much you are making per hour in real time (assuming you enter your rate per mile & diesel cost per gallon). That's very handy for people on elogs to quickly see their optimal speed for a given load/fill-up.

For example, using $5/gallon diesel & a $1.10 rate ($1.60/mile - $0.30 for truck purchase/maintenance - $0.20 for insurance/office/authority costs):

10 mpg @ 55mph = $60.50 revenue - $27.50 diesel = $33/hour
vs
7.8 mpg @ 65mph = $71.50 revenue - $41.67 diesel = $29.83/hour


But at $2.50/gallon, it looks like this:

10 mpg @ 55mph = $60.50 revenue - $13.75 diesel = $46.75/hour
vs
7.8 mpg @ 65mph = $71.50 revenue - $20.84 diesel = $50.66/hour

 

Today's trucks can get close to 7 if not exceed it in many parts of the Nation. Which is not that much of a improvement over say 5 mpg over 40 to 70 years. Engines doubled or tripled in output. Imagine what might have been getting 30 miles to gallon with a different development of heavy truck power.

 

Ok. But you see, some say there are getting 9mpg consistently. It makes me feel bad. I don't think I could get that fuel mileage with my bobtail only.

 

While I commend you on using the great internetz for answers, I've also asked one of my OTR friends "the get-there-asap" to explain why he be rushing (when I rode shot gun for a load with him). My calculations showed me that he was losing more by rushing, but what do I know...I dont have a truck yet.

My experience is based on my Chevy Volt. These are my findings:

• When fully charged, I get 44miles on electric juice if I drive @ 55MPH.
• When I hit 60MPH, I get 40miles (gas engine kick in) to give me the other 4 miles to my destination.
• At 70MPH, I get 34 miles and gas takes me the rest of the way.

Back to trucking. My other OTR friend, "the slow poke" is a steady 65MPH. He drives an 2005 Freightliner with a D60 (odo @ 800K). Rarely in the shop, got fresh tires, clean, gets loads from CHR, home every weekend. This past week, he got a load from DC to Florida for $2100/700 miles and return load for $900.

My "get-there-asap" drives sometime close to 75/80mph. He appeared anxious when I drove his truck @ 60mph one time and started telling me I was holding up traffic. He has a 2007 Freighliner D60. Always in shop, steers appear un-evenly worn, truck a lil tired (odo @ 850K). Gets linehaul loads for Target/Amazon, usually less than $2/mile and sometimes moving MT's. Always running, Cheating Logs all day.

Guess who has a nicer home, happier wife?

Rushing does not always get you there faster.....keep in mind..."THERE" may not always be the destination. It could be whatever you are seeking i.e. More money? More hometime? More Happiness?

A tired overworked horse will break a leg or die sooner. A steadily ridden horse will take you further with less injury and maybe live longer.

 

If it takes a nicer home and things to have a happier wife its not long till you have trouble anyway

 

@wore out ....lol...u must be worn out... I see...I dont blame ya for missing the point...