2020 Ford F250 on 37s - Expedition Truck Camper Build!

[montypower]

All the current generation 2017+ Super Duty trucks have 34 gallon main tank. Which I would deem 32 gallons being usable (without risking running the tank dry and damaging the fuel pump). The long bed crew cab has the 48 gallon factory tank. This is regardless of gas/diesel. There is certainly room for a larger replacement tank but nothing is offered for the gas only diesel. Although, it is possible to use the diesel tank just with unknowns regarding the evap system and connection locations (vent, fill, return).

@mk216v curious to hear about your 60gallon solution. Let us know how that works out.

 

[1000arms]

All the current generation 2017+ Super Duty trucks have 34 gallon main tank. Which I would deem 32 gallons being usable (without risking running the tank dry and damaging the fuel pump). The long bed crew cab has the 48 gallon factory tank. This is regardless of gas/diesel. There is certainly room for a larger replacement tank but nothing is offered for the gas only diesel. Although, it is possible to use the diesel tank just with unknowns regarding the evap system and connection locations (vent, fill, return). ...

Some of the diesels only have a 29 gallon tank. The following is from specifications at https://www.ford.com/trucks/super-duty/models/f350-xl/

Seating capacity		Regular Cab	Super Cab	Crew Cab
		3	6	6
Fuel capacity	6.2L Gas	34 gallon	34 gallon	34 gallon (160" WB), 48 gallon (176" WB)
	7.3L Gas	34 gallon	34 gallon	34 gallon (160" WB), 48 gallon (176" WB)
	6.7L Diesel	29 gallon (142" WB)	29 gallon (148" WB), 34 gallon (164" WB)	34 gallon (160" WB), 48 gallon (176" WB)

 

[montypower]

@1000arms - If that is the case... choosing a diesel seems problematic. Unless ordering a aftermarket tank.... at least there is a tank option but it does reduce ground clearance. Interesting.

 

[1000arms]

Some of the diesels only have a 29 gallon tank. The following is from specifications at https://www.ford.com/trucks/super-duty/models/f350-xl/

Seating capacity		Regular Cab	Super Cab	Crew Cab
		3	6	6
Fuel capacity	6.2L Gas	34 gallon	34 gallon	34 gallon (160" WB), 48 gallon (176" WB)
	7.3L Gas	34 gallon	34 gallon	34 gallon (160" WB), 48 gallon (176" WB)
	6.7L Diesel	29 gallon (142" WB)	29 gallon (148" WB), 34 gallon (164" WB)	34 gallon (160" WB), 48 gallon (176" WB)

@1000arms - If that is the case... choosing a diesel seems problematic. Unless ordering a aftermarket tank.... at least there is a tank option but it does reduce ground clearance. Interesting.

The fuel capacity table is copied from Ford's website.

 

[Tex68w]

The RAM single cab diesel also has the smallest offered tank as well (28gal), seems silly. I'll either add the spare tire aux tank or swap out to the Titan 55gal replacement tank. I am seeing 21-22 mpg right now in stock form, for those that would leave theirs stock and/or delete and tune them you could see some amazing range when combined the tanks. The better fuel economy on the diesel does help offset the smaller tank to some degree and who knows, maybe that has something to do with it?

 

[DickM]

I am told that the diesel 's smaller fuel tank is a result of the room required for the DEF tank.
I can find no replacement tank for the SuperCab (only Crew Cab), and the the only auxillary tank that I can find is a Titan 30 gallon that mounts in the factory spare tire location.
At a cost of $2000, with reduced clearance and departure angle, and close to 250 lbs full hanging behind the axle, it is not a particularly appealing option. And of course, the spare would be hanging off of the back on a swingout, compounding the weight location issue.

 

[Watt maker]

I would just do an in-bed tank with a transfer pump. Not even sure I’d plumb it into the factory filler. It could be used to re-fuel other equipment and trucks but it would also prevent the manufacturer from denying a fuel system related warranty claim. Once you crack open the OEM fuel system, tank included, it opens the door for dealerships to deny warranty coverage even though the chances of something going wrong with just a tank replacement are super low.

 

[Tex68w]

I am told that the diesel 's smaller fuel tank is a result of the room required for the DEF tank.
I can find no replacement tank for the SuperCab (only Crew Cab), and the the only auxillary tank that I can find is a Titan 30 gallon that mounts in the factory spare tire location.
At a cost of $2000, with reduced clearance and departure angle, and close to 250 lbs full hanging behind the axle, it is not a particularly appealing option. And of course, the spare would be hanging off of the back on a swingout, compounding the weight location issue.

You bring up some good points but I hardly see 250lbs as an issue when these trucks have 2000-6000lb payload capacities depending on model/trim. The tank hangs down but really not any more than the factory spare. Relocating the spare might be an issue if you run stock or close to stock size tires but for most that are lifted they will have relocate the stock as it is. With my 8ft long bed I fully intend to store mine in the bed upright at the bulkhead until I go flatbed and then it can mount between the camper and the bulkhead rack. In regards to the DEF tank, they are small and most that do full replacement tanks relocate theirs outboard of the frame rail which isn't an issue for a non-combustible fluid, it hasn't stopped GM from doing it on their HD trucks for some time now.

I would just do an in-bed tank with a transfer pump. Not even sure I’d plumb it into the factory filler. It could be used to re-fuel other equipment and trucks but it would also prevent the manufacturer from denying a fuel system related warranty claim. Once you crack open the OEM fuel system, tank included, it opens the door for dealerships to deny warranty coverage even though the chances of something going wrong with just a tank replacement are super low.

Transfer tanks have been the go-to solution in the AG world for decades now. Easy to get and useful for so many applications. If you aren't running a topper, have no plans for a slide-in camper and can afford to give up the space in your bed then it might be the best solution.

 

[Buddha.]

Most of those transfer tanks are rated for diesel only.

 

[Tex68w]

Most of those transfer tanks are rated for diesel only.

I would say that all of them are. Diesel isn't nearly as combustible as gasoline so it's easy to understand why these manufacturers don't want to mess with these gasoline solutions and ventilation and tank location for collision and impact reasons play a large role in the legal issues behind it all.

 

[Watt maker]

Most of those transfer tanks are rated for diesel only.

I would say that all of them are. Diesel isn't nearly as combustible as gasoline so it's easy to understand why these manufacturers don't want to mess with these gasoline solutions and ventilation and tank location for collision and impact reasons play a large role in the legal issues behind it all.

No there’s still a bunch of companies that offer transfer tanks that are rated and legal for use with gasoline. Transfer-Flow, RDS, AttaTank just to name a few.

 

[Tex68w]

Transfer tanks built to be carried in the bed sure, but auxiliary tanks are another story. Now there are companies making them, the LRA Aux tanks are quite popular in the Toyota world, but I don't know of any undermount aux tanks built for domestic gassers off the top of my head.

 

[montypower]

That's why we had the custom bed tank built (drawing attached to post #1). Only lost 3" of bed length. No vehicle modifications. Siphon transfer. About as simple as it gets. Spare stays in the stock location.

 

[montypower]

Ford earned a bad rap among the Toyota crowd regarding reliability.

Fixed Or Repaired Daily

However, our experience is proving to be very different. In fact, I’d compare it directly to the Toyota Tundra in regards to reliability. Our first year of ownership and 15k miles has been mostly trouble free. And these have been hard earned miles with heavy loads, towing and off road. It has been used much harder than our 2016 Toyota Tundra which hauled a lighter Four Wheel Camper and never towed.

The biggest struggle we’ve had has been the Ford Dealership Service Centers. The technicians have been careless! Oil changes have resulted in oil spills on the valve cover, exhaust, axle and oil pan. We’ve had the wrong oil used, overfilled and leaking oil filter. That’s nuts! How hard is it to change the oil?

Our other issues have been some oil seeping from the aftermarket differential covers (not enough to drip), front differential hubs making “whirling” “air noise” at slow speed (function fine) and rear driveshaft vibration (slight speed and load dependent from lifting).

We are really happy with this truck! It has performed well, solid durability and excellent build quality (on par or better than Toyota).

You can’t go wrong with the 6.2L v8. Boring reliable.

 

[Explorerinil]

Are you still running the Yokohama tires? How do you like them?

great videos btw!