[Engine13]

I thought that some may find this information interesting and helpful should you encounter fuel leak issues. The first link talks about fuel leaks from seals in vehicles using ULSD. The intersting part is the document states that the seal failure is not related to lubricity, but is attributable to the reduction of the aromatics content of the fuel. It also states that fuel additives are not the solution because they do not change the aromatics content of the fuel. Anyways, here it is:

http://www.chevron.com/products/prodserv/fuels/diesel/documents/elastomer_chevron_tb_2005Aug.pdf

The second link provides some FAQ's about ULSD. The way this reads, we all have been using ULSD since October of 2006 according to the implementation schedule. Here is the link:

http://www.chevron.com/products/prodserv/fuels/diesel/ulsd.shtml#A2

I hope some find this useful.

John

 

[sillsmack]

I haven't had any fuel leak troubles but I will tell you about an odd ULSD problem we had/have at work.

My co owns a fleet of f350 f450 most with 7.3 & 6.0 diesels.

One day, I started to lose power. I pulled off the road and let her sit. Upon restart all seemed ok. I headed for home on city streets.
After some distance I felt all was well. I hit the freeway and again no power. I limped it the rest of the way home on city streets.

We ran it into the shop and they found the fuel filter(s) clogged.

Our trucks have the 40gallon steel tanks behind the rear axle.

It seems FORD sprays the insides of the 40gal steel tanks with...something. ULSD seems to eat away at the lining and bits and pieces begin to break off and eventually clogs the fuel system.

The tank has to be replaced & new filters installed.

Boss said mine was the 4th truck of ours we had to do this to.


QUESTION-->
you don't suppose the shop replaced the old tank with an identical steel tank with liner and I will again see this problem somewheres down the road do you ...


time will tell

 

[Btravelen]

There is a concern regarding this occurance when using more than 5% biodiesel. Don't know if it's a TSB, but someone will chime in. Does CA provide tax incentives for biodiesel? If they do, you may not know you're using it in some percentage. Never heard that ULSD causes this.

 

[Btravelen]

http://www.energy.ca.gov/efficiency/2005_federal_tax_credits.html
Scroll down under the "Biodiesel/Alternative Fuels" section......

 

[OMCUSNR]

[ QUOTE ]
Our trucks have the 40gallon steel tanks behind the rear axle.

[/ QUOTE ]


On an F-250, F-350 w/ a 6.0, that is not a stock tank. All the tanks on those trucks are poly, and if a long bed, 38 gal; if short bed, 29 gal. I don't know about F-450's or 7.3 equipped units.

It is well documented that biodiesel is a high solvent fuel and will clean the fuel system of deposits left by old LSD fuel, resulting in a clogged fuel filter. Is it possible that the new ULSD is doing the same thing?

 

[FamilyRide]

[ QUOTE ]

QUESTION-->
you don't suppose the shop replaced the old tank with an identical steel tank with liner and I will again see this problem somewheres down the road do you ...

[/ QUOTE ]

Who here will know what your company replaced them with and what's inside them and if ULSD stripped whatever the tank is lined with and if it'll do it again? /ubbthreads/images/graemlins/biggrin.gif

On the other hand, that is very interesting. Never heard of an OEN tank being metal, but it would have to be lined with something I would expect. If so, I'd be talking to the manufacture of the tanks about it.

 

[Gofaster23]

There is an updated fuel tank for this concern. Fuel will eat the lining and cause grey flakes to get stuck in the primary fuel filter and sending unit, causing a lack of power or a no start concern. This seems to happen only on F-450's and up with the aft axle fuel tank.

 

[FamilyRide]

Ah, so it is OEN (that's "OEM" for those of you now in the know /ubbthreads/images/graemlins/biggrin.gif ) Interesting, and sucks. /ubbthreads/images/graemlins/wink.gif