We left Raleigh, NC on July 5 and returned on August 13. Raleigh-Elko, NV-Stanley, ID-Jackson, MT, all over central and southwest MT-Hot Springs, SD, and back home. The most expensive diesel we bought was the tank we left Raleigh on (don't have my notes before me, but it was in the $5.75/gallon range).. Had the advantage of hitting a new Buc-ee's in Crossville, TN going and coming @ $4.99 going and $4:12 returning, and a just-opened fuel plaza at the foot of the US 62 "ski jump" bridge over the Mississippi River from Cairo, IL @ $4.75 loss leader promotional price, and aside from that Nevada was the most expensive at $5.69 for the one tank I bought in Elko. Prices were declining slowly the whole trip and without adding it all up I'd say we averaged around $4.75. I don't think we paid over $5.00 anywhere other than Elko. I did closely track my fuel mileage (necessary since my gauge is inoperable--the part alone runs around $900, I'm told), and my 6,892 mile round trip saw 13.27 mpg. Not bad considering we were around 13,500 lbs on the hoof , rolling on 35s (yes, fuel mileage and rate of travel corrected for the big tire factor),and I completely broke my pledge to hold it down to 68-72 mph. We also ran the A/C at WOT pretty much everywhere and enjoyed a full day of 40-50 mph headwinds in Utah and Nevada. Instead I ran mostly 72-76 mph which surely cost me 1.5 to 1.75 mpg. It just got unnerving watching semis running 80-85 mph looming up in my mirrors!
For anyone wondering how I made out on fuel range calculations, the most I put in the 38 gallon tank was 31 gallons once and 29 gallons one other time. In all other fuel intervals I took on 22-26 gallons so I had a lot of wiggle room. I've run that old truck out of fuel 3 times in 18 years of ownership--twice in the first year-- and it's not something I want to repeat, especially with my longtime navigator and "advisor" only 2' off of my right shoulder.
Foy
Edited by Foy, 30 August 2022 - 06:06 PM.