Alright,

So I have an 85 Ford F350 6.9L Diesel. My front tank is leaking, and my rear tank,... the pickup broke off (I SUSPECT) of it so if it gets to less than 1/2 I must refill it otherwise the truck bucks like crazy and eventually leaves me by the side of the road.

I was looking on the J.C. Whitney site and stumbled across something I thought was pretty cool (probably because I was unaware it existed).

EXTRA-CAPACITY REPLACEMENT GAS TANK - JCWhitney

EXTRA-CAPACITY REPLACEMENT GAS TANK
Twice the capacity of original-equipment tank (38-gal. vs. 19-gal.)…twice the driving range. Replaces behind-rear-axle tank except on 1980-1989 pickups with dual exhaust which can also replace main tank. Heavy-duty steel is nickel/tin plated inside and out for complete rust resistance. Electrically welded seams are reinforced for greater strength…individually pressure tested for leaks. 34-1/2"W x 13-1/4"H x 26-1/2"L. Installs easily. Won't affect ground clearance, but spare tire must be relocated.
Includes: tank, lock ring, rubber "O" ring, spacers, bolts (to extend original-equipment straps), instructions and adapter kit (to modify and remount existing sending unit). Note: Fuel gauge will remain on "Full" longer because of increased tank depth. <b>Not for diesel fuel.</b>

Sounds good, bigger rear tank, more fuel... I can fix the pickup at the same time I am installing it. Then I realize its NOT FOR DIESEL USE. WHY???????
And does anybody sell something similar that fits the rear of my 350 and is for diesel use?

Dan

 

wow, this thread went far....

lol

 

Any metal rear tank for a Bronco has extra capacity.
The only other thing you need is longer bolts and straps.

No idea why you can't use a poly tank w/ diesel

 

Heres a link that might help:
Large Capacity Replacement Fuel Tanks for Diesel Pickup Trucks ~ TITAN Diesel Fuel Tanks: The leader in Aftermarket Fuel Tanks

 

Yea, cool but ridiculously expensive.
LOL

DG

 

1A auto is a site sponsor.

85 86 Ford Bronco Fuel Gas Tank 33 Gallon New:eBay Motors (item 230409576572 end time Jan-06-10 15:17:00 PST)

 

I am guessing this tank happens to fit F350's also?


Anybody know why they state a tank is "not for diesel use." What's so different that a tank can hold gas but not diesel? I would like one of those 33 or 38 gallon tanks but some say not for diesel use?

Dan

 

I've seen tanks that said diesel only, but not the other way around. I have no idea why a gasoline tank couldn't be used for diesel. Gasoline has a higher vapor pressure so that would not be a concern. Diesel weighs marginally more per gallon but I doubt it would be enough to make a difference with it hanging under a truck.

 

what about corrosiveness? or does diesel leave behind a film? just call the magazine and ask

 

A metal gasoline tank may be galvanized inside.
Diesel used to contain more sulfur. Condensation and sulfur react to create sulfuric acid, this will attack both zinc and copper.
The zinc then remains in solution until either caught by the filter or deposited in the engine.

There are marine (USCG)regulations prohibiting internal galvanizing for tanks containing fuel oils.

Because some bonehead is bound to put the small gasoline nozzle in the larger hole of a diesel tank, but not the other way around.

 

With the addition of an angle iron crossmember because the tank is shorter front to back.

These threads have pics of the Bronco tank installation in a pickup:
https://www.ford-trucks.com/forums/7...rear-tank.html

https://www.ford-trucks.com/forums/7...tank-leak.html

 

Diesel is low sulphur now,just buy the tank and have it coated internally.as I remember diesel now is ultra low sulphur now.

 

Is there a way to get the tank coated. I will just use the secondary tank as the primary and get it coated (the 38 gallon one) if I can find a place to do it.

DG

 

I wouldn't worry too much about it...

 

I couldn't help myself but to call Spectra Premium today. Unfortunately there technical support really consists of people just reading things off of a computer screen so it was unhelpful. As for what I was told,... I was told that the larger tank application was unpopular among the diesel crowd so it was never produced. The tanks are both the same material... they offer a stock 19 gallon diesel and an aftermarket 38 gallon gasoline,... the reason why they can't sell me the gas tank for the diesel is because the dimensions are different and supposedly it won't fit.

I may look into the bronco tank setup... are all these tanks materially the same? Do I need to have my tank coated for diesel use? Where do I get it coated if I need to have it coated?

Dan