What Year Did They Start Putting Def In Diesel Trucks?

SCR technology was first developed in 1957, and it has been used to minimize NOx emissions from coal-fired power stations and other stationary sources for many years. Nissan Diesel in Japan was the first to implement the technology in serial production in diesel automobiles in 2004 to fulfill the world’s highest pollution requirements at the time. Since then, SCR has been widely adopted on diesel cars all over the world, with over one million commercial vehicles equipped with SCR emissions control technology in Europe alone by the end of 2012.

Q1: Where can I find DEF?

A: Diesel Exhaust Fluid (DEF) is widely available at most filling stations and automotive parts retail stores because practically all diesel-powered passenger cars and trucks made since 2010 are fitted with Selective Catalytic Reduction (SCR) and require it. A DEF pump is frequently located on the fuel island at truck stops. DEF is also available at key OEM outlets, such as Cummins dealers and distributors. Your fuel provider may be able and willing to deliver DEF directly to you if you have a large enough fleet and storage capacity to justify bulk purchasing.

Cummins Filtration has teamed up with Old World Industries to become the official North American manufacturer, packager, and distributor of Fleetguard Diesel Exhaust Fluid.

Q2: What’s the shelf life of DEF?

A: The shelf life of DEF is determined by the temperature of the storage facility. DEF should be stored between 12 and 86 degrees Fahrenheit, however when stored below 65 degrees Fahrenheit, the shelf life is increased to two years. To extend the shelf life of DEF, keep it in a climate-controlled location away from direct sunlight.

Q3: What happens if DEF freezes?

A: While DEF does freeze at 12 degrees F, it has no effect on the vehicle’s start-up or operation. The SCR system heats the DEF tank and pipes when the engine starts up, allowing the DEF to thaw quickly and flow to the aftertreatment system regardless of the outside temperature.

Diesel Exhaust Fluid contains 32.5 percent urea and 67.5 percent deionized water in its formulation. DEF will freeze at 12F in storage or when the engine is not in use (-11C). The urea and the water freeze and thaw at the same pace at this concentration level, guaranteeing that you always have the right amount of each. SCR engines are specifically tuned for optimal performance at this ratio, which is why it’s critical to use a high-quality DEF that complies with ISO standards.

There is one operational difference to be aware of: DEF expands when frozen, just like any other water-based fluid (by approximately 7 percent). When the vehicle is turned off in cold weather, the operator should wait 60 seconds before shutting off the batteries to allow the fluid to flow back out of the hoses and into the DEF tank.

Anti-gelling additives and freeze point improvers should never be introduced to DEF since they will obstruct its capacity to function properly and may cause harm to SCR system components.

Q4: How much DEF will my equipment use?

A: DEF consumption varies based on the environment, the equipment’s operation, and the duty cycle. DEF use accounts for 3-5 percent of total fuel consumption on average.

Because most DEF fill-ups occur at the same time as diesel fuel, it’s a good idea to look at utilization from that standpoint. It’s best to simply top off your DEF tank every time you refuel. Adjust your DEF refills accordingly and consider having a spare bottle of DEF on hand if you’re driving a car that sees very little actual activity or is stored in high ambient temps when shelf life is a problem.

Q5: What happens if my equipment runs out of DEF?

A: Like a fuel gauge, all EPA 2010 engines with SCR are equipped with a gauge that displays the DEF fluid level. Furthermore, they are fitted with a set of flashing lights that warn the operator when the DEF tank is running low on fluid. Vehicle speed will be limited if the DEF reservoir is not replenished and becomes low, however if DEF is injected, the engine will resume regular speed levels. A wise precaution would be to have a top-off gallon jug of DEF on each piece of equipment equipped with an EPA 2010 engine and aftertreatment system.

Engines built before to July 8, 2011 may function differently than those mentioned here. For more information, contact your local Cummins agent and request Cummins Bulletin 4971316, “Driver Tips For Fire And Emergency Vehicles.”

Cummins began using DEF in what year?

Since 2003, Cummins Filtration has offered DEF in four sizes: 55 gallon drum, 275 gallon disposable tote, 330 gallon disposable tote, and bulk. Cummins Filtration has added smaller packaging options to its DEF product range, including 1, 2.5, and 5 gallon canisters. Q.

What year did Duramax introduce DEF?

The Environmental Protection Agency (EPA) began introducing laws in 2007 to drastically cut diesel emissions from heavy-duty trucks 1.

By 2013, most heavy-duty diesel pickups were equipped with SCR (Selective Catalyst Reduction) and DEF (Diesel Exhaust Fluid). Some manufacturers, like as GM, started using the technology earlier, with the Duramax receiving it in 2011.

When did DEF become necessary?

If you’re new to owning a diesel vehicle or heavy equipment, you should be aware of a key addition. Diesel Exhaust Fluid is what it’s called (DEF). Aqueous urea solution 32 percent, or AUS 32, is another name for this ingredient. 32.5 percent urea and 67.5 percent de-ionized water are used to make it. Continue reading to learn everything there is to know about the DEF in your DEF system.

The Environmental Protection Agency (EPA) mandated that diesel engines cut their emissions of nitrogen oxides (NOx) in 2010. Diesel Exhaust Fluid, an additive, is used to achieve this reduction (DEF).

This fluid helps to reduce NOx emissions and pollution in the air. As a result, it aids heavy machinery and trucks in adhering to federal pollution standards. Heavy-duty diesel trucks and equipment have featured a diesel tank and a separate diesel exhaust fluid tank since 2010.

Is it possible to pee in your DEF tank?

Please do not urinate in your DEF tank; it will destroy the SCR system, which will cost thousands of dollars to fix. We specialize in offering the highest quality Diesel Exhaust Fluid at Transliquid Technologies.

Is there DEF in a 2011 Duramax?

* The 2011 Duramax features urea injection, also known as diesel exhaust fluid by GM (DEF). When the DEF needs to be refilled, bells and flashing lights will sound. When the tank runs out, the truck enters limp mode.

Is it possible to run a diesel engine without DEF?

Vehicle makers must implement procedures to ensure that vehicles cannot run without Diesel Exhaust Fluid, according to the US Environmental Protection Agency (DEF). The driver of a vehicle receives a succession of alerts on their dashboard displays before the DEF tank runs out (much the same way as if they were running low on diesel). In general, an amber warning bulb will illuminate when the DEF tank level drops below 10%, flashing at 5%, and solid amber warning light will illuminate when the DEF tank level dips below 2.5 percent.

The engine’s power is lowered, a solid red warning is displayed, and the vehicle’s speed is limited to 5 mph until the DEF tank is refilled if the truck is allowed to run out of DEF.

Is DEF used by Ram diesel?


What is the Duramax’s finest year?

The ’06-’07 Classic body type Duramax trucks are perhaps the most wanted of all Duramax variants. The LBZ Duramax has a lot going for it, with possibly the best plug-and-play horsepower potential (on top of 360 horsepower straight out of the box), the last of the (essentially*) emissions-free engines, and a stronger, six-speed Allison to back them up. These trucks are still quite reliable and have the ride-friendly IFS, as well as the quiet and proven Bosch common-rail injection system. However, most models come with a significant price tag as a result of all of the aforementioned. Expect to pay around $20,000 (or more) for a low-mileage, excellent-condition variant unless you locate a bargain.

* On 2006-2007 trucks (as well as the ‘04.5-‘05.5 LLY), exhaust gas recirculation (EGR) was employed, but the diesel particulate filter and diesel oxidation catalyst were not yet available.


  • For a long time, an Allison automatic won’t be able to manage more than 120 horsepower.
  • When off-roading, drag racing, or sled pulling in a 4×4 vehicle, flexing tie rods are a worry.
  • There is no factory lift pump.
  • These trucks are pushed around by heavy trailers more than Ford or Dodge models.
  • Northern regions corrode at a faster rate on rocker panels and cab corners (salt, humidity)
  • At greater horsepower levels, cracked piston concerns become apparent.