Thursday 1 November 2012

Light Truck Service: What’s the Story on Diesel Exhaust Fluid (DEF)?

Whether you call them trucks or pickups, these open-bed vehicles are the workhorses of the automotive market and they deserve the best light truck service as possible. Whether your diesel truck is compact or full-size, make sure you find a diesel specialist in light truck repair to keep your “pride and joy” running and serving you well as long as possible.


If you are looking for quality Truck Repair Services Milton-Freewater OR than find our Wentland Auto Service Milton-Freewater OR Shop. Meet our Muffler Milton-Freewater OR Mechanic to solve any of your  truck  problems.

As part of the service on your diesel, you should be aware of a couple of issues regarding Diesel Exhaust Fluid (DEF).

What is Diesel Exhaust Fluid (DEF)?

DEF is a non-toxic solution of 32.5% urea in de-ionized water. This fluid is sprayed into the exhaust stream of diesel vehicles to cause a chemical reaction and break down dangerous NOx emissions into harmless nitrogen and water. This system is called Selective Catalytic Reduction (SCR) and can be found on many diesel pickups and SUVs. DEF is not a fuel additive and never comes into contact with diesel. It is stored in a separate tank, typically with a blue filler cap.

What will happen if my truck runs out of DEF?

The EPA requires vehicle manufacturers to design vehicles to ensure they cannot run without DEF. Before a truck's DEF tank runs empty, a series of alerts will appear on the dashboard, alerting the driver. Generally, when the DEF tank level drops below 10%, an amber warning lamp will light, at 5% this lamp starts flashing, and below 2.5%, it will be a solid amber warning light. If a truck is allowed to run out of DEF completely, the engine's power is reduced, limiting the vehicle’s speed to 5 mph, together with a solid red warning light.


What is the shelf life of DEF?

Generally, DEF has a shelf life of two years. However, if the fluid is exposed to direct sunlight, or if it is in warm temperatures for extended periods of time, the shelf life will be considerably reduced. DEF packaging is normally labeled with an expiration date.

Is DEF corrosive?

DEF is not toxic, harmful or dangerous. In fact, of all the fluids used in a truck, such as diesel, engine oil, brake fluid, antifreeze and windscreen wash, DEF is the least hazardous. However, it is corrosive for some metals. Ask your DEF supplier for more information about the properties of this fluid.

If you’ve been putting off your diesel light truck service, now is the time to take care of it before winter arrives in all its glory. Call or stop by Wentland Diesel and we will be happy to provide quality light truck service, including changing the fuel filter, at affordable prices. Our diesel service shop at Wentland Diesel is offering diesel fuel filters for $32.80 plus parts on most light trucks through the month October.

Contact our ASE Certified Technicians today by calling 541-938-3875 or go on-line at http://www.wentlanddiesel.com/ for more information about light truck service. Our auto and light truck repair and diesel service shop serves vehicle owners in Milton-Freewater, OR, Walla Walla, WA, Pendleton, OR and surrounding areas.

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