RAM 3500 HD Truck 2WD L6-6.7L DSL Turbo VIN A (2007)
engine and fuel injection system.
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Fuel conditioners (additives) are not recommended and should not be required if you buy good quality fuel and follow cold weather advice supplied
in the Owners Manual.
Proper Bulk (Off-Vehicle) Fuel Storage:
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Proper maintenance of stored fuel is essential. Diesel fuel is seldom entirely free of moisture. Fuel contaminated with moisture may develop a
bacteria or "slime" that may restrict or block fuel filters and lines.
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As diesel fuel is lighter than water, drain condensation no less than monthly from the diesel fuel supply/storage tanks.
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Change the storage tank in-line filter regularly. This filter acts as the last filter prior to the diesel fuel entering the vehicle diesel fuel tank. Good
quality diesel fuel is mandatory. If the storage tank does not have an in-line filter, then a in-line filter should be added. Refer to the table on the
following page for recommended in-line filter specifications.
Proper On-vehicle Fuel Storage And Filtering:
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Proper on-vehicle fuel storage that prevents fuel contamination is important.
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The original (OEM) vehicle fuel tank module (fuel pickup) filter performs a primary filtering of the on-vehicle diesel fuel as the fuel leaves the fuel
tank and enters the fuel lines.
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On-vehicle auxiliary diesel fuel tanks are often added by the vehicle owner to extend vehicle driving range. Auxiliary fuel tank systems must protect
the quality of the diesel fuel just as well as the originally equipped (OEM) fuel tank that came with the vehicle when it was new.
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On-vehicle auxiliary diesel fuel storage tanks must have a primary fuel filter to prevent contamination and moisture accumulation. Refer to the table
on the following page for recommended filter specifications.
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The prevention of moisture in the fuel system, the prevention of fuel stagnation, and the use of a primary fuel filter should all be considered in the
purchase, installation, and maintenance of any auxiliary on-vehicle diesel fuel tank.
Proper On-vehicle Final Fuel Filtering:
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The large fuel filter mounted at the engine is the final fuel filter, water separator, fuel heater, and water drain. This filter is the final 'line of defense"
when maintaining a high level of fuel quality. If the diesel fuel is contaminated or contains moisture, the engine mounted fuel filter system is the last
chance to affect possible correction.
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The quality of the fuel, its prior storage, and fuel handling prior to the final filter all have a significant impact on the amount of contamination and
moisture entering the final fuel filter.
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It is important to drain accumulated moisture/water at least monthly from the final fuel filter. Do not wait until the 'Water In Fuel" indicator
illuminates before performing this maintenance.
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Maintenance on the final fuel filter / water separator is important. Follow the maintenance schedule per the Owners Manual. Replace the filter more
frequently if highly contaminated or high moisture content fuel is encountered.
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On a 5.9L engine, if the final fuel filter is replaced due to a high moisture content diesel fuel, verify that the water sensor probes in the final filter
have been cleaned. Excessive moisture may contaminate the sensor sensing probes. The 6.7L engine includes a new water-in-fuel sensor with the new
final fuel filter element.
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The final fuel / water separator filter must meet or exceed OEM specifications. Some aftermarket filters may not meet OEM specifications.
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The final fuel I water separator filter must meet or exceed the filtration specifications listed in the table shown.
