|
|
|
#1
|
|||
|
|||
Who started this whole ULSD leak issue???
I feel a little cursed. I read the post the other day asking who has experienced diesel leaks since the new ULSD came out. I thought to myself, I sure am glad I haven't had this problem... Well folks, I have this problem. My '87 didn't want to start yesterday morning. I cranked on it pretty good and she finally fired up. Didn't give it too much thought until I was feeling pretty sick yesterday and left work early. Got in the car and she wouldn't start. Well, at lunch today I went out and popped the hood and discovered a very wet IP. I finally got her fired up and drove her home tonight but now am looking at having to replace teh delivery valve seals. This will have to wait until after I get back from the trip to Florida but must be done. Is all of this just coincidence, or is the ULSD really causing all of these problems? I just hope the wife's doesn't start leaking too.
__________________
Mike '80 300D '84 300D '85 300D '87 300D |
#2
|
|||
|
|||
It's true, and my 99 has been biten too (DV#1 seal). Is related to the difference in aromatics added to the fuel per Chevron. Causes o-rings to dry out and shrink.
Be happy you have less o-ring seals than an OM606 does.
__________________
Terry Allison N. Calif. & Boca Chica, Panama 09' E320 Bluetec 77k (USA) 09' Hyundai Santa Fe Diesel 48k (S.A.) |
#3
|
||||
|
||||
some biodiesel will control the aeromatics issue and swell the seals keeping it from leaking. But thats of course if you have access to some biodiesel to blend.
__________________
Current: 05 E320 CDI 07 GL320 CDI 08 Sprinter 05 Dodge Cummins 01 Dodge Cummins Previous 2004 E55 AMG 2002 C32 AMG (#2) 1995 E300 1978 300D 1987 300D 2002 C32 AMG(blown motor :[ 1981 300SD 1983 300SD 1987 300SDL 2002 Jetta TDI 1996 S420 1995 S500 1993 190E 2.6 1992 190E 2.3 1985 190E 2.3 5-Speed |
#4
|
||||
|
||||
I use Diesel Kleen additive in hopes that I am preventing this. Of course, a little extra lube and a cetane point or two doesn't hurt.
|
#5
|
||||
|
||||
Who started this whole mess?
LSD (low sulfur diesel) , and ULSD (ultra low sulfur diesel) are good for us and
the environment! The domestic "Jobbers" and/or Refiners were supposed to put additives into the ULSD to make it "Retroactive" to older diesels and pumps.[NON-DAMAGING] GET REAL! The oil industry will do anything ...as long as it doesn't have to pay for it! I read an article in which "COLONIAL" (one of the unknown largest pipe -line owners domestically) refused to install the additives at the pipeline head with the excuse of the danger of polluting the domestic Jet fuel supply. These Bas-turds will do ANYTHING to save money!!! Yeah, Yeah,Yeah write your congressional representative...(Find some other way to waste your time in a less stressful manner) Read this white paper from the NRC... then tell me we are not getting screwed! UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF NUCLEAR REACTOR REGULATION WASHINGTON, D.C. 20555-0001 October 12, 2006 NRC INFORMATION NOTICE 2006-22: NEW ULTRA-LOW-SULFUR DIESEL FUEL OIL COULD ADVERSELY IMPACT DIESEL ENGINE PERFORMANCE ADDRESSEES All holders of operating licenses for nuclear power reactors, except those who have permanently ceased operations and have certified that fuel has been permanently removed from the reactor vessel. PURPOSE The U.S. Nuclear Regulatory Commission (NRC) is issuing this information notice (IN) to alert licensees to the potential for new ultra-low-sulfur diesel (ULSD) fuel oil to adversely impact engine performance. It is expected that recipients will review the information for applicability to their facilities and consider actions, as appropriate, to avoid similar problems. However, suggestions contained in this IN are not NRC requirements; therefore, no specific action or written response is required. DESCRIPTION OF CIRCUMSTANCES In January 2001 and in June 2004, the U.S. Environmental Protection Agency (EPA) finalized the Clean Diesel Trucks and Buses Rule and the Clean Nonroad Diesel Rule, respectively, with more stringent standards for new diesel engines and fuels (http://www.epa.gov/oms/regs/fuels/diesel/diesel.htm). The EPA rules require a reduction in the sulfur content of highway diesel fuel from its current level of 500 parts per million (ppm) (low sulfur diesel, or LSD) to 15 ppm (ULSD). Refiners were required to start producing the cleaner-burning diesel fuel ULSD, for use in highway vehicles beginning June 1, 2006. The EPA requires sulfur reductions for land-based nonroad diesel fuel to be accomplished in two steps, with an interim step from currently uncontrolled levels to a 500 ppm cap starting in June 2007 and the final step to 15 ppm in June 2010. Although the EPA requirements for the 15 ppm ULSD do not take effect until 2010 for nonroad diesel fuel, several nuclear power plant licensees have received shipments of ULSD. The California Air Resources Board regulations require that all California users of diesel fuel oil transition to ULSD fuel oil by June 1, 2006. Some licensees have already received (and all licensees will eventually receive) ULSD fuel oil from petroleum product refiners, distributors, and wholesalers and may have started using this fuel in diesel engines that provide functions important to safety. Examples of diesel engines ML062710079 IN 2006-22 Page 2 of 5 providing functions important to safety include: Emergency diesel generators (EDGs), dieseldriven fire pumps, diesel-driven auxiliary feedwater pumps, diesel-driven essential service water makeup pumps, diesel-driven instrument air compressors, security diesel generators, safe shutdown facility diesel generators, diesel generators for emergency preparedness and response functions, and station blackout diesel generators. There are several diesel fuel properties other than sulfur concentration that change as a result of moving to ULSD that may adversely effect the engine performance including: Energy Content 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 volumetric energy content (BTU/gallon). The expected reduction in energy content is 1.2 percent or more. Less energy content of the fuel can reduce the instantaneous output rating of the diesel engine. The reduced output rating may be less than the value specified in the plant’s design and licensing basis, potentially rendering the diesel inoperable. The reduced energy capacity of the ULSD may result in increased fuel consumption such that the onsite diesel fuel storage capacity for the emergency diesel generators may be insufficient to satisfy the plant’s design and licensing basis for diesel operation duration before offsite replenishment is needed. The reduced energy capacity may also lengthen the amount of time needed for the emergency diesel generators to reach the required speed and voltage. Fuel Particulate Build-up Increases Additives to increase lubricity and to inhibit corrosion used by different refineries and wholesale suppliers can react or become unstable in storage, which can result in increased fuel particulates that may foul or plug filters and fuel injection equipment, and can affect suitability of some testing methods. Some nuclear plant licensees using ULSD have observed an increase in the rate of particulate buildup in samples from their diesel fuel oil storage tanks. Fuel System Seal Leaks Non-nuclear industry operating experience using ULSD shows an increased incidence of fuel system leaks at points where elastomers (O-rings) are used to seal joints, with most leaks occurring at the fuel pump and injectors. The evidence to date suggests the problem is linked to a reduction in the aromatics content of the ULSD which affects seal swelling, as does seal material and age of the material. Compatibility with Lubricating Oil As discussed in NRC IN 96-67, “Vulnerability of Emergency Diesel Generators to Fuel Oil/Lubricating Oil Incompatibility,” lubricating oil contains an additive package that neutralizes the products of combustion, most importantly sulfuric acid, to prevent engine corrosion. With a IN 2006-22 Page 3 of 5 reduced amount of sulfur, there is more unreacted additive in the lubricating oil, which may result in the formation of deposits when some of the oil is burned. These deposits can build up behind the piston rings, forcing the rings to extrude and come into contact with the cylinder liner wall, resulting in scuffing. Microbial Growth Diesel fuel that was desulfured at the refinery through hydrocracking (versus hydrotreatment) may have a greater propensity for microbial growth due to an increased concentration of n-alkanes (linear molecules). Incompatible Metals There are no known compatibility issues with aluminum, carbon steel, stainless steel, and bronze. However, copper and zinc are incompatible with ULSD because both are oxidative catalysts that will accelerate the formation of sediments, gels, and soaps (American Society for Testing and Materials (ASTM) D975, Appendix X2.7.2). Lubricity Lubricity is a measure of the fuel’s ability to lubricate and protect the various parts of the engine’s fuel injection system from wear. The processing required to reduce sulfur to 15 ppm also removes naturally-occurring lubricity agents in diesel fuel. Rotary and distributor type fuel pumps are completely fuel lubricated resulting in high sensitivity to fuel lubricity. Refiners treat the diesel fuel with additives on a batch to batch basis to ensure adequate lubricity. Therefore, receipt of ULSD with inadequate lubricity is possible but unlikely. BACKGROUND Applicable Regulatory Documents General Design Criterion (GDC) 17, “Electric Power Systems,” of Appendix A, “General Design Criteria for Nuclear Power Plants,” to Title 10 of the Code of Federal Regulations (10 CFR) Part 50, “Domestic Licensing of Production and Utilization Facilities,” requires that an onsite electric power system and an offsite electric power system be provided to permit functioning of structures, systems, and components important to safety. In addition, GDC 17 contains requirements concerning system capacity, capability, independence, redundancy, availability, testability, and reliability. Appendix B, “Quality Assurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants,” to 10 CFR Part 50 establishes overall quality assurance requirements for the design, construction, and operation of structures, systems, and components important to safety. IN 2006-22 Page 4 of 5 Regulatory Guide (RG) 1.137, Revision 1, “Fuel Oil Systems for Standby Diesel Generators” dated October 1979, describes a method acceptable to the NRC staff for complying with the Commission’s regulations regarding diesel fuel oil systems for standby diesel generators DISCUSSION In January 2001 and in June 2004, the EPA finalized the Clean Diesel Trucks and Buses Rule and the Clean Nonroad Diesel Rule, respectively, with more stringent standards for new diesel engines and fuels that require a reduction in diesel fuel sulfur content to 15 ppm. Some licensees have already received, and all will eventually receive, this ULSD. As described above, the ULSD has a number of properties that have the potential to degrade or render inoperable the associated diesel engine or may create a condition that is inconsistent with current plant design and licensing bases. This ULSD issue is of particular concern because it effects all licensee diesel generators that are safety-related and/or important to safety, thereby, presenting a possible common mode failure. Licensees can evaluate the potential impacts of ULSD and can take measures to ensure the plant is consistent with the current design and licensing basis and prevent the diesels from being rendered inoperable or significantly degraded. IN 2006-22 |
#6
|
||||
|
||||
Ulsd
Before you mess with your delivery valves, be sure that you have the correct splined socket. There is one for 85 and below and one for 86 and beyond.
__________________
N. Hodges 1994 S350 1987 300 SDL (for sale) |
#7
|
|||
|
|||
The tree huggers who are praising ULSD's virtues don't consider the MILLIONS of gallons of fuel seeping into the groundwater, do they? OK, so we'll be breathing easier while we drink all this ULSD that our cars and trucks and trains are spewing all over the ground
Which would you rather die from, lung cancer or liver cancer?
__________________
Marty D. 2013 C300 4Matic 1984 BMW 733i 2013 Lincoln MKz |
#8
|
|||
|
|||
Man, things have changed.
In 1985, when I bought my first MB diesel(1964 190Dc), diesel fuel was .40 to .50 cents less than a gallon of 87 octane gasoline. That fact, coupled with the high mpg, at the time, of these cars mad them economical to drive. Today, my wife's 300 hp. Eldorado gets 26mpg on the highway, while 'ol stinky gets aroud 22mpg. Diesel costs .40 to .50 cents more than a gallon of premium unleaded. To add insult to injury, since my '84 300D lacks abs and airbags, I pay 30% more for insurance, and now comes the issue with ulsd fuel, not to mention the falling dollar and rising euro, causing parts to become more expensive. |
#9
|
||||
|
||||
White or Silver container??
Quote:
I fully agree on the need for a little extra lube and stuff......was using Diesel Kleen.....now experimenting with Syandyne Diesel Performance Formula...... SB There must be something to this "'ol salt" stuff...we seem to think a bit alike.... SB
__________________
Diesels: '85 300D, "Max, Blue Benz", 155K, 27.0 MPG '84 190D 2.2, "Eva, Brown Benz", 142K, 40.2 MPG '77 240D (parts car) '67 Eicher ES 202 Tractor "Otto" (2cyl, Air Cooled, 30HP) Gassers: '94 Ford F-150, "Henry", 170K (300 Six) 17.5 MPG '85 190E 2.3, 148K....Parts Car '58 Dodge W300M Powerwagon (Flat Fenders) Less than 10 MPG |
#10
|
||||
|
||||
I have a leak too
It seems to have started with my old injector return lines. That one was nbd. They looked original! Now I seem to have them(leaks) coming from various places and not all the time or all at once. These are very small quantites but still enough to notice. I also noticed considerable primary filter clogging within the first tank of the USLD garbage. As someone mentioned, I too use Power Service Diesel Kleen in the silver/ gray container in hopes the seal and leaking situation may be avoided. I also have noticed starting problems after an overnight rest period or 6 plus hrs. at any time and temperature. I totally agree with that paper from the Nuclear folks. Is there anything else we can do to improve our outlook with these issues? A side note: Don't you love the tree huggers that ask you why you drive a car(they mean diesel) that causes or contributes the MOST greenhouse gas pollution in our atmospere. They make me dizzy
__________________
1984 TDT Blue on Blue "Harriet" 314,143 9/29/05- Our first date 351,000 12/29/08- Oh, the places we have gone! 1991 SDL Black on Palomino "Winchester the III" 188,655 8/11/07 218,700 12/29/08 Work vehicles: MCI- D4500 125k D4505 200k 102A-3 1.8Million! and my fav |
#11
|
|||
|
|||
I have yet to have any leaks on my 82 turbo 617, but it seems the 616/617 is less prone to the leaks than then 603 and 606 engines. That NRC report is scary, though. I'd imagine the freight industry would have some sort of lobbying power that could get the problem fixed, because if our diesels (and the ones at nuclear power stations) are having these problems, semis probably have something similar. Of course, the current political climate will probably put "the environment" first.
__________________
1992 300D 2.5T 249k - Parked with a bad transmission 1981 300SD 142k - Daily driver |
#12
|
||||
|
||||
Quote:
I don't think biodiesel would make the problem go away either, because from what I remember, don't folks who usually switch to high blends of biodiesel experience fuel leaks in old lines too, like ULSD?
__________________
'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate Sooner or later every car falls apart, ours does it later! -German Narrator in a MB Promotion Film about the then brand new W123. |
#13
|
||||
|
||||
I could say this all day long until I'm blue in the face. Our IPs ARE NOT lubricated by diesel fuel, but by motor oil. IP damage is not an issue for us. ULSD is NOT gonna kill your car. Rust or an accident will probably do that.
__________________
'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate Sooner or later every car falls apart, ours does it later! -German Narrator in a MB Promotion Film about the then brand new W123. |
#14
|
||||
|
||||
the entire IP is not lubed by Oil, the plungers and adjustable valves are lubed by fuel... afaiK
John
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
#15
|
|||
|
|||
Higher blends of Bio are detrimental to the rubber fuel lines used in the older (80's) diesels. The OM606 (95 and on) and possibly some earlier 90's engines use resistant fuel lines and seals.
__________________
Terry Allison N. Calif. & Boca Chica, Panama 09' E320 Bluetec 77k (USA) 09' Hyundai Santa Fe Diesel 48k (S.A.) |
Bookmarks |
|
|