Gas Mileage Concern.... - Page 3 - Nissan Frontier Forum
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#21 (permalink) Old 01-14-2013, 04:32 PM
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Last fill up I got 18.4 with the blend. Summer I was getting around 20.5 mixed C/hwy.

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#22 (permalink) Old 01-14-2013, 04:57 PM
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I just filled up last night. Just over 15MPG in mixed driving.

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#23 (permalink) Old 01-14-2013, 05:12 PM
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Hahaha... I get SINGLE DIGITS! My days aren't quite exciting enough without putting some weight on the skinny pedal. But in all seriousness I can still creep on 20 mpg on the highway with 7" of lift, 35's and hundreds of pounds of armor. Staying in the right lane, in sixth going between 55-65 mph, behind a semi. It's all in the driving habits. The MPG on these trucks just drops like crazy if you go over 55 mph or don't keep the RPM's under 2500. It has a lot of power available, which is directly proportional to how much fuel you use, so to get good gas mileage you need to never use the part of the hp/tq curve that you actually want to. If I try to drive conservatively 60% and spirited 40% of the time I get about 12 mpg. 100% conservatively in town goes into the 14-16 mpg range; depending on the number of stop signs/lights. Living downtown brutalizes my in town mpg. Lots of factors to consider.

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#24 (permalink) Old 01-25-2013, 08:56 AM
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I was wondering about gas mileage during break in on a new Fronty. I have had my new '12 SL for almost 3 weeks now and I'm averaging about 13mpg US mixed driving. I am also running a ScanGauageII that I also had in my 06 SE, First few tanks I hand calculated and used the on board computer as well as the ScanGauage.

I'm really hoping the gas mileage improves soon because this new truck is way more thirsty than my 06 was. Mixed driving in winter I was usually getting about 16-17mpg US with my 06. Summer I was getting about 21mpg US. Straight hwy under 70mph I was usually seeing 23-24 mpg US. Best hwy mpg so far in the new truck was 18mpg. I'm usually fairly easy on the throttle.

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#25 (permalink) Old 01-25-2013, 09:23 AM
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Quote:
Originally Posted by CdnFrontier View Post
I was wondering about gas mileage during break in on a new Fronty. I have had my new '12 SL for almost 3 weeks now and I'm averaging about 13mpg US mixed driving. I am also running a ScanGauageII that I also had in my 06 SE, First few tanks I hand calculated and used the on board computer as well as the ScanGauage.

I'm really hoping the gas mileage improves soon because this new truck is way more thirsty than my 06 was. Mixed driving in winter I was usually getting about 16-17mpg US with my 06. Summer I was getting about 21mpg US. Straight hwy under 70mph I was usually seeing 23-24 mpg US. Best hwy mpg so far in the new truck was 18mpg. I'm usually fairly easy on the throttle.

23-24 is amazing. Best I have gotten was almost 22.

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#26 (permalink) Old 01-25-2013, 10:27 AM
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I recently installed a ScanGauge-e so that I can track my instantaneous MPG. Man that number is all over the map... Obviously while under heavy acceleration it will post numbers in the 1-2 mpg range. But coasting down a long descent @ 65-70 mph I can get as high as 181 mpg! (6-spd out of gear, if in 6th and engine braking the number drops to 125) What I see is that this rig can get 23 mpg @ 70 on level highway, but the second the road has any ascent, the numbers dive to 16-18 mpg. If you drive with an egg under your foot you can get good mileage, anything else and it suffers. I recently drove to Santa Barbara and back and got ~21 mpg @ 65-70 mph.

I did cal this ScanGauge unit and it tracked perfectly average wise against my trip computer so it seems to be correct, just the numbers that it displays swing to extremes very easily... I'm learning enough about it's tendencies so that I'm getting about 1 mpg better per tank, although that's really hard to attribute to the use of this gauge. I think just having this little reminder on mpg numbers every second or so helps keep my foot out if it.

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#27 (permalink) Old 01-25-2013, 02:04 PM
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Quote:
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23-24 is amazing. Best I have gotten was almost 22.
Best I ever recorded was nearly 27 US mpg. Unloaded, cruise @ 55mph on some flat country roads for a 120mile trip.

Quote:
Originally Posted by KickinTires View Post
I recently installed a ScanGauge-e so that I can track my instantaneous MPG. Man that number is all over the map... Obviously while under heavy acceleration it will post numbers in the 1-2 mpg range. But coasting down a long descent @ 65-70 mph I can get as high as 181 mpg! (6-spd out of gear, if in 6th and engine braking the number drops to 125) What I see is that this rig can get 23 mpg @ 70 on level highway, but the second the road has any ascent, the numbers dive to 16-18 mpg. If you drive with an egg under your foot you can get good mileage, anything else and it suffers. I recently drove to Santa Barbara and back and got ~21 mpg @ 65-70 mph.

I did cal this ScanGauge unit and it tracked perfectly average wise against my trip computer so it seems to be correct, just the numbers that it displays swing to extremes very easily... I'm learning enough about it's tendencies so that I'm getting about 1 mpg better per tank, although that's really hard to attribute to the use of this gauge. I think just having this little reminder on mpg numbers every second or so helps keep my foot out if it.
The Scan Gauge is a neat tool to have on board. I've run mine now for over 3 years, mostly in my 06 SE. I found it to be fairly accurate andit does help "coach" you how to drive easier for better mpg.

I couldn't help but notice the fuel useage on the warm up cycle in my new SL is waaaayyy more than my 06 SE. I think this is part of the reason my mileage is so bad compared to my old truck. I'm hoping as break in progresses it will start to back off the excessive fuelling at startup when cold out.

Current- '13 F-150 FX4 EcoBoost
Previous POS Truck from Hell - '12 SL CC LongBox
Previous - '06 SE CC ShortBox


Last edited by CdnFrontier; 01-25-2013 at 02:08 PM. Reason: Automerged Doublepost
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#28 (permalink) Old 01-25-2013, 04:06 PM
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My last fill up was 13.2. I'm lifted but I had the same lift on my '06 and never got that low with it. Hopefully a block heater will help.

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