Whats your best 50 mile average?

Diesel328

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Well, here is mine. 23.3 mpg 50 mile average. Not too bad for a big off road truck!
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Just got back from a trip to Utah. Drove the ZR2 from San Antonio, TX and back for a backpacking/fishing excursion. My best 50 mile stretch was between Provo and Price @ 26 MPG. I’ll get a pic of that, but for now I’ll post a pic of the overall numbers from the trip…..
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Just got back from a trip to Utah. Drove the ZR2 from San Antonio, TX and back for a backpacking/fishing excursion. My best 50 mile stretch was between Provo and Price @ 26 MPG. I’ll get a pic of that, but for now I’ll post a pic of the overall numbers from the trip…..View attachment 776
Wow! That's really good.
 
lol my best is like 16mpgeven on a flat 800mi round trip. The speed limits around here get up to 85 so thats probably a factor.
 
I will play.
 

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Not sure of my best 50, but in general my hand math results in a 1 - 1.5 MPG lower than the truck computer tells me I did. Seems like that's the case for most vehicles I have owned. Computer typically says I get in the low 16 mpgs per tank of gas, but the hand math is generally 14.8-15.2.
 
Best she’s got. But I rarely drive under 60mph anywhere. (Semi rural area)

Truck is completely stock powertrain wise.
 

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lol my best is like 16mpgeven on a flat 800mi round trip. The speed limits around here get up to 85 so thats probably a factor.
Anything above 55 and the MPG is a steady decline. 70 is 17, 75 is 16, 80 is 15, and 85 is 14. In the pancake state (Florida)

My real world average is 14.5-15 consistently
 
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Best she’s got. But I rarely drive under 60mph anywhere. (Semi rural area)

Truck is completely stock powertrain wise.
Does having the transmission in auto vs 2wd effect it? For some reason, auto was good for about a 3 mpg drop in my TB.
 
Does having the transmission in auto vs 2wd effect it? For some reason, auto was good for about a 3 mpg drop in my TB.
Honestly I don’t know. I just filled up the tank yesterday so it’s a good time to test it. I’ll drive in 2wd for the week and find out.

Edit: it does seem that auto keeps the front differential engaged all the time. So that seems to a no brainer to increase mileage. If it’s an actual 3mpg like you suggest, that’s a casual 20% uplift in my 14.6 450 average.


I appreciate that insight.
 
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First 100 miles, averaging 14.1 lol. last 50 has been 14.7. I went from a 5.3 to the 6.2 so I had to get on it a few times...

Edit: Avg about 16 now after around 400 miles
 
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Y’all running 87 or 93 octane? Have you tried different grades to see if it makes a difference?
 

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