Engine/Transmission (1994 - 1998) How will the New ULSD effect our motors?

[12V Ford]

I tried searching but couldn't seem to find any info on this. So what's the word on the new fuel and how it will effect our motors?



Thanks,



Clayton

 

[abranz]

Ulsd

I've been asking the same question to my mechanic. There appears to be a trend of injector problems with the newer systems and he seems to think it will affect 12 valve engines less than the newer high pressure systems. I hate to say it but I believe the price we are going to pay at the pump and the possible increased maintence costs are going to be very high. Just my thoughts. Tony

 

[GBrock]

I just read an article about it. I think it was in Diesel Power magazine. Anyway, nobody knows. The author of the article claimed the new fuel will be safe for our rigs but "may" cause problem for the fuel pumps since there is less lubricant in the new fuel.

 

[Bill Lins]

That's funny- Four Wheeler magazine claims that, due to an additive, ULSD will have HIGHER lubricity than currently available fuel! They did say, though, that older trucks may have trouble with rubber seals & parts in their fuel systems deteriorating & causing leaks. Who knows? :-(

 

[JFielding]

Ulsd

I've been using it in both trucks for about a month and can't tell a difference in performance or mileage. I still add a little lube to the fuel.

 

[FATCAT]

Buy lots of Standyne Performance formula ... lots of it.

 

[SHobbs]

The Charles Rivers Associates/Baker and O’Brien (CRA/BOB) study done for the American Petroleum Institute (API) estimated a shortfall of 320,000 barrels per day when the regulation is introduced in 2006.



All dispenser pumps must be labeled based on U. S Environmental Protection Agency (EPA) guidelines and indicate the sulfur level and designation of the fuel. For example, any dispenser with S500 (500 ppm of sulfur) diesel fuel must declare that the fuel is not suitable for fueling model year 2007 and later vehicles.

All on-highway heavy-duty diesel vehicles manufactured in model year 2007 and later will be required to use S15 (ULSD) - See FAQ "Why is S15 (ULSD) required?" These vehicles will be forbidden to use diesel fuel with sulfur content greater than 15 ppm (parts per million). Some 2007 light-duty and passenger car vehicles will also require S15 (ULSD).



Vehicles not specifically designed for use with S15 (ULSD) may use either S15 (ULSD) or S500 (500 ppm) diesel.



Model Year 2007 diesel engines will be required to use high-efficiency catalytic exhaust emission control devises (or comparably effective technology).

On-highway diesel fuel sulfur levels be < 15ppm starting in June 2006.



We are not sure whether the transition to S15 (ULSD) in 2006 will affect fuel system elastomers (e. g. , O-rings). Any change will depend on the o-ring material and age, as well as the change in seal swell characteristics of the particular fuel being used, relative to the fuel the vehicle has been using. Experience in transitioning to S500 (500 ppm) in 1993 suggests end-users should be proactive. Specifically, maintenance records should be reviewed to ensure that fuel system elastomer seals have been changed out at recommended intervals with recommended materials.



In general, the processing required to reduce sulfur to 15 ppm also reduces the aromatics content and density of diesel fuel, resulting in a reduction in energy content (BTU/gal).

The expected reduction in energy content is on the order of 1% and may affect fuel mileage.



There is some info that I found

 

[ndurbin]

Actually we 12 valvers need not worry about low lubricity of the ULSD for our injection pumps as their oil cooled (not fuel cooled like the VP44 and CP3). The injectors maybe the only problems we see. So a bottle of additive per tank would not be a bad idea to help the inkectors out.

 

[Gary - K7GLD]

Actually we 12 valvers need not worry about low lubricity of the ULSD for our injection pumps as their oil cooled (not fuel cooled like the VP44 and CP3). The injectors maybe the only problems we see. So a bottle of additive per tank would not be a bad idea to help the inkectors out.

The often quoted and relied upon fact of older pumps being "engine oil lubed" is OK, as long as you ignore the fact that the injection pump *pistons and cylinders* still must substantially rely on FUEL lubricity for wear reduction and control...

 

[Bill Lins]

Correction to my post above- it was the May 2006 issue of 4 Wheel & Off-Road, not Four Wheeler. Mea Bada.

 

[Vaughn MacKenzie]

Gary is correct. . . while part of the 12-valve inj. pump is oil lubricated, portions of it like the plunger barrels are lubed and cooled by fuel. Bad fuel will hurt a p-pump too.



Vaughn

 

[Champane Flight]

Don't worry, be happy!

Now we can get a larger amount of diesels to the US! Here is one of the suppliers of lubricity additives.



http://www.octel-starreon.com/Products_RFA_Lubricity.htm