Understanding the relationship between
Average MPG and
Average MPH will do more to reduce operating cost than chasing pennies-per-gallon on a road trip. (Record & Chart history; FUELLY app).
Intelligent vehicle operation reduces
annual fuel burn to the point that vacation miles are practically free given the same budget.
TSD Logistics offers others a program using their EFS discount (big truck discounting). Seems nice till you realize that the chains offer “best” discount (the ones offered you) at the
worst chain locations. Meaning the crowds and difficulties of getting in & out in a timely fashion.
On a long Interstate day in the big truck I’ll often get passed while running 67-68/MPH by the same vehicles several times thru that day. That’s bad planning & poorer execution.
A rule of thumb is that:
— 80% range (36-gl CTD = 28-gl) is maximum.
— Miles covered per day (450).
— 16-MPG = One fill per day.
Early in the day is best for in/out. At truckstops it’s pretty much 0800-1100 in outer metro and rural areas.
Earliest start (pre-dawn) is also
better for both travel time and fuel economy at the same road speed as a later start.
Traffic volume is what kills both MPG and Engine Hour averages.
Diverting off into town a few miles just killed the Highway FE,
introduced higher collision risk, and
decreased the putative savings. Stop & Go plus crossing traffic a
bad idea to choose.
The best fuel stop is in the same direction of travel (fewest or no turns ingress/egress), has
many diesel-only fuel pumps,
and exits directly back onto the Interstate.
Use that in the hours noted above.
Lowest cost = better operation (no lane-changing; no use of service brakes as the ideal), no idling, set speed below cars, and
doesn’t involve chasing pennies per gallon.
The fuel budget for a trip is predicted using conservative numbers beforehand.
“Saving” $600 on a 5k trip wasn’t a savings. It was heading out blindly with an unknown vehicle.
Truck companies or owner/operators go broke on that path. The vehicle has a historical average.
Improving that average is the real game.
Given that it’s a motorhome likely experiencing low miles over X-years,
depreciation is the factor that matters most.
Cost is total outlay over X-years expressed in nights spent aboard. (Lower fuel CPM barely exists as a change on a per-night expression; it’s not a savings).
Sight lines in mohos are terrible. As are turning radiuses.
One mishap (fault irrelevant) killed the lifetime “savings” of false economy from going thru traffic 2X to save pennies.
Big truck firms don’t allow driving into town to chase pennies. They’re serious about the cost of fuel (as it can entail risk). Ones “skill” is an irrelevancy, it doesn’t factor.
Pulling my TT is a 62’ combined rig. I choose PETRO when I can and use the farthest pump from the fuel island C-store with the easiest exit to road from those pumps
and that Petro features the largest parking lots of any fuel chain.
At 1000 (or 1.5-2.0/hr past sunrise) the place is about as empty as it’ll get. (Always study sat pic beforehand).
Ideally this break will be during my Hour #5 on the road. I’m ready for a real break of about an hour. So fuel and a meal are indicated. I can find a quiet corner far away while there, or head on down the Interstate to one of the larger rest areas (modern term is Safety Rest Area for new or totally rebuilt). It’ll also be quiet relative to the rest of the daylight hours.
On a bad day that first 4.5-hrs given 60-MPH average (below actual set speed, one
needs to understand how this works; closest is best), my MPG could be as low as 12. That’s 22-gallons.
At 16 it’s 17-gallons consumed. (Same road, only traffic differs).
Highest Average MPH relative to cruise control set speed is
avoiding that which then lowers the average (off highway distances & time).
“You” chase your pennies-per-gallon.
I’ll take $25 per fill-up (17-gal versus 22). Fuel cost per gallon is not the first consideration
or indicative of lowest actual cost. (33-CPM fuel versus 41-CPM fuel).
— Those who leave at 0800 and travel till about dark will experience the highest costs: in fuel, component wear, time en-route, and in fatigue (same travel speed attempted).
Little or no traffic — no impediments — is lowest fuel cost. (Highest average speed is road design, not cruise control set number), Nationwide that’s before 1100 to get most miles done.
Vacationers have more choices (no need to be “timely”). Also don’t need to travel the Interstates. For all roads, include this:
Highway miles are an emotional problem re fuel cost. It’s “higher” per week than the metro bubble average, even if better MPG. (Get a grip).
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