I bought a Ram 1500 4.7 quad short bed 2wd 64000 miles about 2 months ago and am trying to see what others are getting out of a full tank. I ask because the dummy guages tell me I am estimated at about 320 miles after fill up. With the fuel guage buried on E, I have filled up to 22.16 and 22.02 gallons. If this is supposed to be a 26 gallon tank, is it not filling up all the way or am I missing something? There is no damage to the bottom of the tank either.

I do mostly rural city driving, getting about 13.5 to 14.5 mpg. Per tank I get between 300 to 320 actual. By my shanty math, it is either not filling up all the way or the fuel guage is off. The only thing I can find on here is threads about the gas pump kicking off early, but I'm not convinced that is the issue. Nor am I convinced there IS an issue!

 

Can't help you personally on the 5.7 mileage but others will be along shortly to share what they get.

 

I know the 5.7 fuel tank still has 10-15% of it's fuel left when it show 0 miles range. Likely the 4.7 is similar, that would account for most of your difference.

 

most vehicles have a reserve below the E of about 10%... 20ga tank would be 2gal, 30gal/3gal.. ect.. 26gal tank has almost 3gal after the light illuminates..

my concern would be the content of that 2.6gal... or, the wear on the pump if you regularly allow it to operate under 1/4 tank (dang thing relies on the fuel content to cool it, stupid engineers)..

you're likely not going to 'run out of fluids', but you may in fact 'run out of gas'..

 

The owners manual states that there is a reserve in the tank, I believe it's 10%.

You never put a "full" tank in when you fill up. My old car had an 18 gal tank and I never put it more than 16 gal.

 

Thanks for the speedy replies. I know I shouldn't be running on fumes, but a boy's gotta know! I just find it odd that that there would be almost 6 gallons on reserve. Even 15% means approximately 4 gallons.

 

I've never filled up more than 23 gallons and that was with the light on

 

When only travelling to work, I drive 12 miles a day. That would add up to 3 more days before a fill up. How many miles are you 4.7ers getting per tank?

 

you realize that when the Gas Light comes on you have enough gas to drive another 20-40 miles which equates to somewhere around 1.5-3 gallons of fuel... so 320 miles is about right... if you really want to see what you get out of a FULL tank.. then drive till the engine dies and then walk to the nearest gas station and get a gas can...

I usually get about 320 for 22-24 gallons of gas (89 Octane)...

 

Thank you, that's exactly what I was looking for. I found it odd that I drove over 30 miles after the light came on (10 of those miles after it showed 0, which is why I thought it might be off). And yes, I did have a full can in the bed JIC!