Gas Tank - How low can you go?

[Supreme Pizza]

The fuel gauge and fuel light are specifically designed to say "Need fuel now!" - Well before you run out. There is already a built in feature that notifies you that you are out of fuel. I'm sure you can guess what it is. As for hand pumping the fuel nozzle for 10 minutes after it 'clicks' off, you should not do that. There is a tube that sucks fumes back up the fuel nozzle to reduce pollution and prevent overfill spills. When it sucks fuel, it shuts off. When you hand **** the pump nozzle like that, you are feeding fuel back into the pump. You are buying gas and giving it back to the gas station. I was getting gas one time and some butt plug was pumping the handle like that for 10 minutes. I was thinking: Ever wonder why it doesn't over flow- Einstein? 

[2018GMC]

1.Carry a 5 gallon fuel container in the back. Make sure you have the plastic fill extension if you have a capless truck. 2016 and up?

2.Keep track of how many miles you can go after warning.

3.Fill truck when it dies with 5 gallons to get you to nearest station.

4.Let us know the results.

Of course this is at your own risk. Don’t keep driving if engine starts to cut out. Fuel pumps don’t like being starved for fuel. ;-)

[Colossus]

please don't flirt with going super low on fuel.  I've seen too many damaged pumps, and I myself may have screwed up the pump in my mothers vehicle by running it too low by foolishly driving around to find the station with the lowest price for gas.  Had a bit of trouble getting it started again there at the pump. 

[wforrest08]

Here is some reading for you guys pumping after the click.

https://clark.com/cars/why-you-should-never-top-off-your-gas-tank/

Incase you don’t want to read it it says don’t do it. Your taking a chance of Fn your emissions system on newer vehicles. And IMO you are I haven’t wrenched professionally in 14 years but when I was I replaced a fair amount of cans due to check engine lights/EVAP codes. 

[Loco-diablo]

In the year that I've owned my 2017, I think the most I've put it to fill was 21 gal (at about 1/8 tank), so I'm even more cautious! LOL!

I round up to the next dime. I already had one overfill situation where I got gas all over the side of the truck.

[diyer2]

You make the call.

It's your truck and your money.

Gas tank low fuel content can cause the fuel pump to run warmer and shorten it's life due to a lack of gasoline which cools and lubricates the fuel pump.

Over filling will damage the fuel evap. system. 

 

[Hogtiming]

1/4 tank and mine gets filled up, sometimes sooner than that

 

It cost the same to keep the needle at the top as it does at the bottom, that's how I've always looked at it

[dman1458]

I almost always drive until the light comes on.  I've had the truck for a year now and around 50-60KM Distance To Empty  the DIC will move to "Low Fuel" and no longer give you a distance.  I have driven another 30 KM, so to get it effectively to 20KM.  When I fill up I have been able to get about 94 liters (25 gallons).  I can almost never put much more in after it clicks off.  If I try to get more than about 50 cents I run the risk of spilling out.  

[KARNUT]

I fill up at 1/2 a tank, on trips sometimes near 1/4. I stop at first click, it’s long been said never top off on non vented systems.


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[djw88]

when the gas light comes on or you have 0 range you still have 5 gallons of gas.

[MixerDriver]

I personally have never seen the low fuel light in mine. Lowest I got the tank was sitting right on E, and the 34 gal tank only took about 28 gallons. Usually fill up around ⅛. Over the winter, I try not to get it below ¼. 

[frenchsquared]

When you have less then 40 miles left it say low. I have run my 2015 out of gas. Its pretty close to accurate and I typically run it a while after the light comes knowing I have about 40 miles. The one time . Iran it out of gas I simply forgot to check it. We were out in the middle of no where and used way more feul then I expected. Made it back to town and less then a mile from the gas station when it ran out.  

[NWI Denali]

It's easy enough for me to fillip at >1/8 or 1/4. I've never seen the low fuel light and i like my fuel pump.

[garagerog]

I generally fill up when I get down to 1/4 tank even around town where there's a plethora of gas stations because of the aforementioned fuel pump cooling. I inherited the low mileage 2005 K1500 I drive now from my late father, drove it out to SC from Eastern Wa. state in August 2016 and during that mostly interstate trip I hardly ever dipped below 1/2 tank before gassing up. Why you ask? Simple answer, bugs, especially along I-90 in SD where I was looking for a gas station at 5/8 of a tank simply so I could clean my windshield.

[Pearl2017]

+1 the fuel in the tank helps cool the Fuel Pump. About 1/4 tank is as low as i'll go before refill. If at 95K miles the pump quits a new one is a LOT of $$$. My coworker let his kids drive the family vehicle and they would put $5 at a time in ...went thru 2 fuel pumps @ $650 each before i heard and advised him to not let them do that.