Here is a response from cummins I recieved about the fuel quality issue
Summary: Toughest Standards Comments
Solution:
Thanks for your Email message.
You are on track when you asked the question "Are there fuel additive packages,
filtration, or other methods that could help reduce wear and increase the
durability of these systems? "
Keeping fuel systems clean with good filtration is key to long life. Also buying
good fuel is key to long life to the fuel system.
Cummins specifies a quality #2 diesel fuel, which does not require additives;
there are exceptions to #2 diesel:
1) Blended winter fuels, which may contain up to 60% #1 diesel and which may be
necessary if you are not equipped with fuel heaters in the filter head and/or
fuel tank; lubricity additives must be used with large percentages of #1 diesel.
2) Use of biocides if the engine/fuel is stored for more than a few weeks, more
than a month
or two, with ambient temperatures greater than 50 deg. F or so.
3) Cetane improvers for low-cetane fuels.
4) Lubricity additives for out of spec fuel that is the only fuel available or
for emergency
use.
5) Pour point or cloud point depressants, if the fuel is not treated with these
additives in winter climates.
Cummins warranty is to cover defects in material and workmanship by the
manufacturer. The actual wording is that "Cummins neither approves or
disapproves the use of any fuel additive, fuel extender, fuel system
modification or the use of any device not manufactured or sold by Cummins, Inc.
or its subsidiaries". This would be after market uprate kits.
"Engine damage, service issues or performance problems that occur due to the use
of these products are NOT considered a defect in workmanship and/or material as
supplied by Cummins and are NOT compensated under the Cummins warranty".
Cummins engines are designed, developed, rated and built to operate on
commercially available No. 2-D diesel fuel; therefore, it is Cummins policy NOT
to recommend fuel additives. In extreme situations, when available fuels are of
poor quality or problems exist which are peculiar to certain operations,
additives can be used; however, Cummins recommends consultation with the fuel
supplier.
The subject "Fuels for Cummins Engines" bulletin is now 3379001, which is
published by Cummins and is available through our Literature Control Service.
Gannett Direct Marketing Services, Inc. in Louisville, Kentucky
(
http://www.gdms.com/) handles all Cummins literature. If a payment arrangement
is worked out, by credit card, they can arrange shipment of Cummins literature.
All available literature is listed in Cummins Publications and Training Aids
Catalog (bulletin no. 3379034).
Gannett operators deal in bulletin numbers, so before you call you need to have
all the bulletin numbers ready for the literature you need. If you wish
assistance in determining which bulletin numbers you need, you can obtain help
at your Cummins distributor or by calling 1-800-DIESELS (343-7357), Option 4.
You can reach Gannett's Cummins Literature Order Service by calling
1-800-646-5609 (1-502-454-6660 outside North/Central America), or call
1-800-DIESELS (343-7357) and select the literature option, or E-mail to
"inquiry@gdms.com", or FAX to 1-502-456-6179, or by writing Gannett at:
Gannett Direct Marketing Services, Inc.
3400 ROBARDS CT (LOUISVILLE KY 40218-4544, e. g. , for package delivery)
PO BOX 34470
LOUISVILLE KY 40232-4470
1-800-646-5609 (1-502-454-6660)
We thank you for your interest in Cummins products. Please let us know if you
need assistance in locating the nearest Cummins-authorized Dealer or Distributor
Service Provider. For assistance in locating a Service Provider, feel free to
use Cummins North America Dealer Locator, which can be found on Cummins website:
http://www.cummins.com/service_locator/index. cfm
Please let us know if you have other questions and if away from your computer or
have a time-critical request that needs more urgent attention, feel free to call
us toll-free (from North America) at 1-800-DIESELS (343-7357).
Email direct:
powermaster@cummins.com
Regards,
--
Powermaster
Customer Assistance Center
Cummins, Inc.
Columbus, Indiana, USA
Free QuickServe Online for Consumers
http://quickserve. cummins.com[/QUOTE]
If you check with Cummins, the 04 and up engines are
not covered by a Cummins Warranty. This was told to me at a Cummins Power Systems Truck Center. Daimler Chrysler does the warranty.