cwwest,

First off welcome to FTE lots of good info and people around here

Here is a post from Beachbumcook in another thread:
"Fuel pumps do not start to leak in such a short time after switching to ULSD fuel. Some very old pumps may, but today's seals work better and are less prone to leaking... yes it can happen, but it does not happen over night and early reports from when they went to the LSD back in the early 90's was that it was minimal even then. There has not been enough ULSD sold, used and enough older trucks out there to make a blanket statement like this. There have yet to be widespread reports of pump problems from GM, Dodge and Ford... let alone the "big rig" companies... and there are a lot of of us out there and have yet to have or see a problem.
ULSD fuel has the minimum required lubricity and ASTM spec's, but many of us just want the added piece of mind... but heck, there are many that use nothing and have zero problems... so go figure."

http://www.ford-trucks.com/forums/54...ml#post4222270

I think bottom line, the USLD fuel has not been in use long enough to know the long term affects on a motor, and with the older 7.3L and others i do not believe any vehicle manufacture has tested these fuels in their older products to really know the answer(most of these vehicles are out of warranty so no incetntive for the vehicle manufactures to test this). The manufactures are going to rely on the ASTM testing and specs and the data supplied by the Fuel Manufactures. You may want to go to the Chevron website and the API website and read about the new fuel and CJ-4 spec'd oil for more insite into your question. Also you could e-mail Chevron with your questions and see what answers they give you, as they should be more familiar with the new fuels than the automotive manufactures.

Hope this helps

 

BlackHat, not to dis-agree with you, but before Ford came out with there own version (its stanadyne repackaged) they (FORD) did refer to stanadyne as being approved by Ford in the owners manual, they may have since recanted and added their own brand in there. Whatever the case may be, I know without a doubt my 03 supplement mentioned stanadyne by name. Maybe someone here will scan a copy of it and post it.

 

Ryan,

I believe you, if you say it was in your printed 2003 manual, it was in there. I respect your opinion to much to think anything else .

I just find it interesting that all the Pdf copies from 2003 up until the 2nd ed. of the 2006 manual on the Motorcraft website do not recommend any fuel additive be used at all. I don't mind Ford changing there mind, but it would be nice if they would issue a TSB covering all 2003-2007 6.0L and fuel additives, instead of having three or more different recommendations on wether or not to use fuel additive and spec or brand preference. Nothing like Ford making everything clear as mud

 

I stand corrected, it was infact a TSB.


Quoted form Keith in another post........

Ford has revised their thinking on this with multiple SSM's and BMs covering a lot of different circumstances.

Cold Temperature, Lack of Power, Poor Economy, Hard Start, Excessive White Smoke:
This could be due to gelling of the fuel, formation of ice in the fuel tanks or lines or poor fuel quality. If diagnosis finds no cause for the above symptoms, try using a fuel conditioner, such as Stanadyne Performance Formula or equivalent, that will improve the cetane level of the fuel. Do not use any product containing alcohol. If the conditions improve with the additive, then find another fuel source or continue to treat the fuel. Broadcast Message 1309, 1464; SSM #17406.

 

Yep, clear as mud.......Funny thing though, I talked to Matt the other night, he had a run in with his truck running bad (imagine that ) he suspected bad fuel, so he poured half a 96 oz. bottle in the tank and it started to clear up pretty quickly. Almost like magic in a can.........

The only thing I can offer is my opinion, my opinion is this, the 6.0 needs 46 cetane fuel to run as tested in the lab by Ford. The only way to ensure this is by using an additive. I think there is a direct relation to "trucks all of a sudden running bad" then maybe a lesser experienced tech trys his best to diagnose a problem that really does not exist, parameter or code wise and .....yup you guessed it bad fuel. Running it every tank just simplifies it for me, call it insurance if you will. One other thing to note, it is highly unlikely that a Ford tech would try to deny you warranty on the fuel system if powerservice has been used extensivly and the fuel system is clean as a whistle. What do you think would happen on a truck using nothing, that was full of trash, sediment and water? I already know the answer, cause it happened to me.

 

I had talked with the local Ford diesel tech. He said Ford has made no comment on the subject(7.3). He did say they had had a couple of 7.3's with leaky water separator valves (which he implied may have been cause by LSD fuel) and said they would be happy to rebuild valves for only $250. Bottom line at this point: I guess using a quality additive would be the prudent thing to do for older 7.3's.

 

Ryan,

Good catch, glad you remembered were Jeff had posted that. I am going to copy that TSB to a file

I run either DK or Stanadyne in mine every tank. I prefer Stanadyne a little better than DK only because with Stanadyne, you only need one formula winter or summer. But Stanadyne is harder to find, usually have to get a truck stop or large diesel manufacture, whereas you can get DK at China Mart.

 

blackhat620,

You are correct it doesn't say anything in the Ford papers anymore, but if you think about it they are trying to get you to buy their brand of products at the same time!! I would be amazed if they said go out and buy there items that we don't make any money on instaed of the Ford one we do make a profit from.

Also see this:
"mrxlh,
BlackHat, depends on which owners manual you have. My 03 owners manual recomended Stanadyne by name. My 05 says additives are not needed if ASTM 975 spec fuel is used."

And not but just a few years ago the Stanadyne brochure was standard equipment in the glove box of 7.3 Powerstrokes.


Here is the link to the OEM approval for Ford useage:

http://www.stanadyne.com/new/ppt/showfile.asp?id=717

Again we stock Stanadyne products because they are built by an diesel injection company and are the ONLY OEM approved aftermarket additive!!

Mark @ DPPI

Mark @ DPPI

 

Since that marketing bulliten is dated June of 2000, how can it apply to a 6.0? I'm not saying anything against stanadyne, just that the reference made doesn't seem relavant to the 6.0.