I have dual gas tanks on my truck, could someone tell me how many gallons each are?

 

The front tank is 19 and I think if it's a shortbed the rear is 17or16 and longbed it's 18.......not positive though.

 

I know the front is 19, the rear I have no clue

 

Ok, well i've been getting 200 miles on the first tank, and divide that by 19, i'm getting 10.52 MPG........ And trust me, i've been driving like a gma too!

 

Set your trip meter, drive 200 miles, then fill it up and divide by the amount of gallons you out in it. Overflow the tank before and after, so you know that you have close to the same amount of gas in your truck.

Fill it up (overflow)
Drive 200 Miles
Fill it up (overflow)
Divide by gallons

i think you get the idea

 

yep, thats the best way of figuring out mpg. im sure you're getting more than 10 mpg, because my truck gets about 12 mpg with 3.73 gears, 33" tires and me driving it like i stole it

 

Yeah I get about 14mpg, I used ot get 11, but the Superchip yeilded better mileage. And my 14 is with hard driving, consistent 0 -45mph runs. Then the occasional ricer, who makes me go all out LOL

 

I'm not a dumbass i know how to figure it. But theres something wrong, there no reason on this earth for it to be getting 10MPG, NONE, and i have been easy on it, doesn't matter if i'm on it or not, it gets that. When i had my oil leak, oil leaked all over the O2 sensor, so that could be the problem.This is with 3.55 gears, Exhaust, and 31"tires.

 

are you sure your speedo is correct(since you say you have 31" tires)? because im guessing that if your speedo is off, then your trip odometer will be off too.

 

It is probably off too, yes. I just took the 02 sensor out, and it had a purple looking coating on it.

 

When your speedo shows 60, you are actually going 66.3 (roughly). If you convert this 10.6% difference, that means you are getting about 222 miles on that 19 gallon tank. This is close to 12 mpg. The O2 could have been the prob. Good luck

 

When i had the sixer in mine I got 10-12 and never better than 13 down hill with a tail wind. (4.9 4x4 31's 3.55's) I never calculated the % speedo was off. I figured if it sucked that bad I might as well have a 351. Now I get 10-11 but I get there quicker

 

Damn, and i thought this engine was actually good for something..

 

LOL it sounds like its a gas hog

 

Skrew this POS, i'm gonna find me a Gen 1 L, and Mod the **** out of it. *Flips his truck off* *Tells truck to go fist itself*