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Discussion Starter #1
When the low fuel light comes on I usually need about 16 gallons to fill it up. According to the specs it holds 21.1 gallons. Does that seem too early to anyone else? That means the light comes on and it shows empty when it actually has almost a quarter of a tank left. No big deal I guess, just curious if this happened to everyone else.
 

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16 gallons seems about right. I figured I had about 100 miles left once the low-light came on.


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Filled up this morning with 14.46 gallons and my needle was sitting right on the top part of the E line (no light on yet). I've only had the truck a month but I am still not used to the gas gauge being so off. This is the lowest I've let it go just to see and was surprised that I still had 5.5+ gallons in the tank. I'm trying to figure out how long I can go between fill ups mainly to see if I can go a whole weeks worth of commuting without filling up.
 

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I think I can get about 18 gallons in there if I run it very low. Do you have the trip computer with the distance till empty (DTE) function? The light comes on at about 30 miles left. I once drove ~30 miles past that and put in 18.5 gallons.
 

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I consistently fill 19-20 gallons, but I also run about 30-50 miles past the dummy light. I would not recommend doing this if you don't know your truck very well yet or are doing an out of ordinary commute. My goal is to get as close to 300 miles per tank so I usually use the trip counter more than the fuel gauge. I know MY truck will make it to 300 under normal conditions without running out of fuel so I get gas when it is convenient during my commute. Been using this method for nearly 3 years now with no issues.
 

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Discussion Starter #7
Maybe it is my OCD kicking in but I like to be able to get at least 300 miles out of tank of gas. If I fill up when the light comes on I usually do not get there unless I am on a highway trip. I am thinking I could run it to 300 miles and still have a couple of gallons left but I would have to ignore the dummy light for a while.
 

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300?? When I push it I try to get 400. Which I can fairly easily.
If I really push it doing purely highway I can hit 350 but that is a little more than I feel comfortable. If your truck is fairly stock I could see 400 being possible. My usual mixed mpg is only 15.5mpg, assuming I can burn all the fuel in the tank that puts my max distance at about 325 miles, so I'd say hitting 300 is a realistic goal for me and my commute.

But good on ya for hitting 400!
 

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I hit around 350 miles before the light comes on. I usually drive another 50 miles. Fill up with 19 gallons. I have a 4 cylinder by the way. Lots of highway driving. Never go above 60mph
 

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If I really push it doing purely highway I can hit 350 but that is a little more than I feel comfortable. If your truck is fairly stock I could see 400 being possible. My usual mixed mpg is only 15.5mpg, assuming I can burn all the fuel in the tank that puts my max distance at about 325 miles, so I'd say hitting 300 is a realistic goal for me and my commute.

But good on ya for hitting 400!
My work commute is 18.5 miles. Most of it is on 55mph roads with only a couple of stop lights in the middle. You can really ekk out the mpgs. If I am on real highways with 65 mph speed limits and realistically pushing 75 all that is out the window. Not to mention any off roading, city driving, or winter idling.

Typical for me is: light comes on at about 350. Computer shows 30 miles left on the tank. I know I can get at least 20 miles past the zero miles left reading. But I will usually get gas at or just before the light comes on.
 

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Doesn't the gauge for approximating when tank will be empty change depending on the driver? Like if someone likes to floor it, when you fill up it will say you have approximately 200 miles (example) vs someone who doesn't floor it 300 miles (example). An intelligent like system? Thought I read this somewhere but could be wrong.
 
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