Towing w/ Gas?
#12
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Joined: Mar 2002
Posts: 4,470
Likes: 2,107
From: Milton, Fla!
That’s my plan for my 5.3 1/2 ton GMC.
Im only pulling approx 7k lbs but at 80, it likes gas, let alone in the mountains.
Im only pulling approx 7k lbs but at 80, it likes gas, let alone in the mountains.
#13
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Joined: Jul 2009
Posts: 8,527
Likes: 706
From: Taunton Ma
not may companies make a tank like that for gasoline, and I also believe you need some permits to transport over 50 gallons. Big difference in hazards carrying that much diesel vs gasoline
#14
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Joined: Mar 2002
Posts: 4,470
Likes: 2,107
From: Milton, Fla!
I’ve got a couple of extra poly, bellow deck gas tanks that I’m looking at for a temporary fix.
Smaller capacity like 15 - 18 gals.
My thought is an auxiliary pump in the bed w/a feed line to an adaptor in place of the filler cap and a switch on the dash.
When gas gauge gets low, Ill refill the tank w/o stopping.
We do a lot of trips from here in Ohio to Fla.
Where we normally go is 17 - 17 1/2 hrs straight through including 3 - 4 gas stops.
I do it non stop.
If I cut MPG in half pulling the boat, that’ll end my bonsai non stop trips due to added fuel stops.
I think this might work.
If we take a wk off, a trip to Fla is doable and worthwhile.
If we burn 2 days down and 2 back, it ain’t.
Smaller capacity like 15 - 18 gals.
My thought is an auxiliary pump in the bed w/a feed line to an adaptor in place of the filler cap and a switch on the dash.
When gas gauge gets low, Ill refill the tank w/o stopping.
We do a lot of trips from here in Ohio to Fla.
Where we normally go is 17 - 17 1/2 hrs straight through including 3 - 4 gas stops.
I do it non stop.
If I cut MPG in half pulling the boat, that’ll end my bonsai non stop trips due to added fuel stops.
I think this might work.
If we take a wk off, a trip to Fla is doable and worthwhile.
If we burn 2 days down and 2 back, it ain’t.
#15

I towed my tiger all over the country with 8.1 lowered dually and allison trans.. 187k miles on it now and runs great, its the backup truck now as I have an 09 diesel, its nice to have it in case I need it, been thinking of maybe letting it go though.
#16
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Joined: Jul 2020
Posts: 157
Likes: 68
From: Crystal Coast NC
I know plenty of friends that haul open and enclosed car haulers with gasser 3/4 ton trucks and have no issues. I actually searched for a clean gas truck before i settled on my duramax.
Last edited by NC03GT; 02-01-2021 at 12:12 PM. Reason: spelling
#19
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Joined: Dec 2016
Posts: 583
Likes: 363
From: Portland OR
Here in the Pacific Northwest the 2500/3500 market is dominated by diesels. Then recently when I traveled to Florida I noticed lots of gas 2500/3500s, in fact I saw more gas than diesel. I was wondering why, then it hit me. Duh, Florida is flat, and gas is cheap. In the Pacific Northwest everything is a steep hill and gas is expensive!
#20
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Joined: Jun 2009
Posts: 9,967
Likes: 6,455
From: Chicago
I’ve got a couple of extra poly, bellow deck gas tanks that I’m looking at for a temporary fix.
Smaller capacity like 15 - 18 gals.
My thought is an auxiliary pump in the bed w/a feed line to an adaptor in place of the filler cap and a switch on the dash.
When gas gauge gets low, Ill refill the tank w/o stopping.
We do a lot of trips from here in Ohio to Fla.
Where we normally go is 17 - 17 1/2 hrs straight through including 3 - 4 gas stops.
I do it non stop.
If I cut MPG in half pulling the boat, that’ll end my bonsai non stop trips due to added fuel stops.
I think this might work.
If we take a wk off, a trip to Fla is doable and worthwhile.
If we burn 2 days down and 2 back, it ain’t.
Smaller capacity like 15 - 18 gals.
My thought is an auxiliary pump in the bed w/a feed line to an adaptor in place of the filler cap and a switch on the dash.
When gas gauge gets low, Ill refill the tank w/o stopping.
We do a lot of trips from here in Ohio to Fla.
Where we normally go is 17 - 17 1/2 hrs straight through including 3 - 4 gas stops.
I do it non stop.
If I cut MPG in half pulling the boat, that’ll end my bonsai non stop trips due to added fuel stops.
I think this might work.
If we take a wk off, a trip to Fla is doable and worthwhile.
If we burn 2 days down and 2 back, it ain’t.
YOur pump and filler cap idea sounds like an fire ball waiting to happen

Mine fills the tank via a Tee in the filler hose. Keeps the main tank always full thru gravity. There`s a shut off at the tank.
Someone asked me one time if my fuel gauge is broke cause it never moved from full in 7 hrs on the way to LOTO




