Gas tank
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
Pickup? 19 gallons. But unless you run it bone dry every time (BAD idea, obviously), it still won't help you estimate the mileage. Option - dispense from the pump into a five-gallon jerry can, then into the truck, and count the number of fills of the can.
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Posting Guru
Joined: Nov 2007
Posts: 2,014
Likes: 1
From: Long Island, NY
I did run it dry this time. I will fill up some 5 Gal. cans to see how much I can get in there. Got 308 from toped off to dry this time. If my math is right thats 15 + MPG @ 20 Gal a tank. Now I know when I get to about 280 It might be a good time to switch to the ront tank. Is the front tank the same size as the back?
Cargo Master
Joined: Feb 2010
Posts: 2,526
Likes: 6
From: College Station, TX
My owners manual shows all lwb trucks to have 19 gallon front tanks and 18.2 gallon rears. The exceptions to that being chassis cab trucks having two 19 gallon tanks. It shows swb trucks to have 16.5 fronts and 18.2 rears.
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Cargo Master
Joined: Feb 2010
Posts: 2,526
Likes: 6
From: College Station, TX
Which also perplexes the hell out of me since I consistently go 25-40 miles further on my rear tank than front. Maybe the vent mod allows it to actually fill up and the not-modded front can't reach capacity?...
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Fleet Owner
Joined: Aug 2004
Posts: 20,419
Likes: 197
From: AZ
A real slight OT while we are on the subject of fuel tanks. Is there a rubber gasket or somthing on these tanks at the top? When I fill mine all the way up they leak. If I'm on the road I fill both of them all the way up and when I'm driving I'll run 50 miles on one tank and switch to the other to drain them down a little. If I let it sit with both tanks full they both leak.
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