Jump to content
  • Welcome Guest To Mopar1973Man.Com

    We are a Dodge Ram Cummins Turbo Diesel forum. We are very friendly and helpful group of Dodge Ram Cummins owners. We will try to keep your truck running the best we can and provide information for diagnostics, repairs and even guide you on the best replacement parts to use. 

     

    Registration is free. Registering on the site will provide access to many more things like...
     

    • Contribute to the Forum being able to ask questions and get support for your Dodge Ram Cummins.
    • Contribute to Article Database adding your ideas and suggestions.
    • Classified Ads posted by the members. Post up your used parts and vehicles.
    • Member Garage where you can proudly display your vehicles and modifications that you have done to them.
    • Download files, documents, and Quadzilla Adrenaline tunes for your truck.
    • 911 Support Network. We've got a group of members will to aid you if your truck breaks down on the road.
    • Reduced Advertisements displayed to you.

Recommended Posts

Well, at risk of being run down by truckers for past tank of fuel, I tolerated 55 mph to/from work (60 miles each way, altitude gain/loss 2000 feet from Flagstaff to Winslow and back), and resulted in 25.68 mpg hand calculated. Scan Gauge II was giving me 26.4.

Share this post


Link to post
Share on other sites

My SGII speed, if I set it at 5 results in less miles driven than my GPS odemeter, and if 6, then more than GPS odometer. Can't seem to get the miles driven to agree with GPS. I find myself changing the speed about a 1/2 way through tank to get miles to agree, so I can see the potential for error, but it's pretty close.Was your 25.3 done at 55? If not what speed did you average for that mileage. I don't know how much longer I can tolerate 55 on the interstate, it's eating into my time, also, have to leave for work 15 minutes earlier than before.

Share this post


Link to post
Share on other sites

I just went went to michigan, today, as in right now lol. I screwed up and ended up being around 600 miles on 3/4 tank, maybe a little more. I did 80 the entire way. Will be interesting to see what I get. I am gonna go 50mph for at least 200 miles on the way back. Should have numbers for you all by monday.

Share this post


Link to post
Share on other sites

My SGII speed, if I set it at 5 results in less miles driven than my GPS odemeter, and if 6, then more than GPS odometer. Can't seem to get the miles driven to agree with GPS. I find myself changing the speed about a 1/2 way through tank to get miles to agree, so I can see the potential for error, but it's pretty close. Was your 25.3 done at 55? If not what speed did you average for that mileage. I don't know how much longer I can tolerate 55 on the interstate, it's eating into my time, also, have to leave for work 15 minutes earlier than before.

Well I did a trip from Cascade, ID to Stanley, ID then down to Boise, ID. This is all winding canyon roads and hill climbing. When i could better I would typically limit out to 55-60 MPH. post-2-138698163615_thumb.jpg 153,549 - 153,197 = 352 Miles / 13.915 Gallons = 25.29 MPG (Copied from my fuel logbook)

Share this post


Link to post
Share on other sites

Just got back home, finally. I wasn't able to fill it up after the 80mph run since it costs half my soul but I am going to judge it was around 33 gallons for 650 miles so thats 19.69mpg. Way over my 2mpg/5mph theory which would have theorized around 17mpg. I really did beat the crap out of it so I don't see how it gets so good. Musta been the 2 stroke! On the way back I did 60 the whole way and, not sure what it got since I didn't top it off but from what I could tell, I think it would be pretty close to the expected 25mpg. I am going to top it off for the weekend and run home and back at 50 since traffic was a little too much to try it on the way back here today. That will get me 180 miles worth of testing on some hills and curves.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  



×