Mpg
03-13-2013, 07:57 AM
#17
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I don't know about down there with your #1 and #2 diesel but here we have summer and winter diesel. Winter diesel costs 5mpg and very noticeable when towing
03-13-2013, 08:12 PM
#18
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It has very little to do with HP. When i bought my 1st gen I dyno'd at about 160hp and got 20-21mpg out on the road(3/4T 4x4 3.55gears). At 500 hp it ran 21-22mpg on the road. At 750hp it still got 21mpg. At 1000hp with the 5.9 it got 20-21mpg hwy. Now with a 6.7 at 1000hp it gets....... 20mpg hwy.
P-pump, no smog parts, no headaches.
P-pump, no smog parts, no headaches.
03-13-2013, 08:43 PM
#19
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Dang my friends 92 auto 4x4 4:10s with add on o.d. It gets 9.5 to 10. My old 67 ford 1/2 ton f-100 step side 352 4v with 3:90s 3 on the tree with cable pull o.d. Got 23 to 25. The sad part was it would pull a trailer in underdrive and get 16/18. Yes different dog but technology since the days gone by has made a turn towards the far left. The 2012 kw I run gets 3.2 mpg on a good day with all great technology working. Yes burn twice fuel but twice as clean "but how much pollution to make twice the fuel". Make no sense. Washington needs to open the door and look out into the real world, and they will when someone greases their palm but with the grease they can't grip the door ****. Done off the soapbox-and I apologize to those who think D.C. Does all the good!
03-13-2013, 11:55 PM
#20
Registered User
Believe it or not, the type / tread on your tires have more impact on your fuel mileage that you would believe.
I have two sets of rubbers for my truck. A set of mud terrain tires I use in the winter, and a set of summer highway tires I use for the rest of the year. With the mud tires on, I drop my fuel mileage almost 4 MPG, just because of their tread pattern. Since they're mudders, you can feel the rumbling when pulling away from a stoplight, that eventually goes away when you get moving. Rolling resistance plays a big role in your MPG's as when I put the summer tires back on, my mileage goes right back to 18-19 MPG.
I have two sets of rubbers for my truck. A set of mud terrain tires I use in the winter, and a set of summer highway tires I use for the rest of the year. With the mud tires on, I drop my fuel mileage almost 4 MPG, just because of their tread pattern. Since they're mudders, you can feel the rumbling when pulling away from a stoplight, that eventually goes away when you get moving. Rolling resistance plays a big role in your MPG's as when I put the summer tires back on, my mileage goes right back to 18-19 MPG.
Running mixed Hwy/local I get 20-21 mpg in the crewcab. Straight Hwy I have seen a bet of just shy of 28 mpg....but usually average about 25 mpg.
03-14-2013, 06:00 AM
#21
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Well, at least I got one..... 
Yup.... I run them in the same 80-90psi range myself. I know it's over the recommended pressure, but after decades of doing so, I've never had any issue other than, depending on the vehicle, a little over wearing of the center of the tire. I compensate for that at the next rotation.
I've NEVER seen that type of mileage, but then again, I've done no real modifications other than the 3200 spring. After I install gauges, I'll tell you if my "tweaks" made any difference.
I've NEVER seen that type of mileage, but then again, I've done no real modifications other than the 3200 spring. After I install gauges, I'll tell you if my "tweaks" made any difference.
03-15-2013, 08:54 PM
#23
Registered User
No I base all my calculations off the US gallon....3.78L to one US gallon. I fill up in the US anyway.
I don't know how, or why, my mileage is so good, but I'm not complaining.
I don't know how, or why, my mileage is so good, but I'm not complaining.
03-16-2013, 09:13 AM
#24
Registered User
I'm a MPG hound with few mods on my truck (4" exhaust is about it)
I run narrow skinny tires and keep the PSIs where they belong
My MPGs run 22-24 and when they drop I know something's wrong
last time it was the fuel pump screw, which had backed its way out - producing alot of black exhaust upon acceleration
I have no desire to own a modern truck with electronics and power-robbing emissions equipment, especially if it's less fuel-efficient to boot
I run narrow skinny tires and keep the PSIs where they belong
My MPGs run 22-24 and when they drop I know something's wrong
last time it was the fuel pump screw, which had backed its way out - producing alot of black exhaust upon acceleration
I have no desire to own a modern truck with electronics and power-robbing emissions equipment, especially if it's less fuel-efficient to boot
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