The consumption of DEF can vary greatly. An average consumption rate can be 800 km (500 miles) / 1 Litre, but this consumption rate can be more than doubled, depending on the driving style, road and weather conditions.
How far can you go on a tank of DEF?
No matter how heavy the load, according to the OE manufacturer, the typical average light duty truck will consume 2-3 gallons of DEF per 800 miles. However, most new trucks with an average miles per gallon rating of 20+mpg will go roughly 8,000-10,000 miles on a tank full (10 gallons) of DPF.
How low can you run DEF fluid?
Diesel Exhaust Fluid (DEF) freezes into a crystalline slush at 12°F (-11°C) and should not be kept at temperatures above 86°F (30°C). If DEF is frozen on your vehicle, for example overnight or over a weekend, you do not need to take any action.
How far does DEF fluid last?
How Often Do You Have to Add Diesel Exhaust Fluid? 2.5 gallons of DEF will last approximately 800 miles on the road. That means, 1 gallon of DEF will last about 300 to 500 miles. You can figure, for every 50 gallons of diesel, you'll need 1 gallon of DEF.
How long does 5 gallons of DEF last?
CALCULATING DEF REQUIREMENTS
This means between 1.2 and 2.0 gallons of DEF will be required for a vehicle with a 65-gallon gas tank. If you have a five-gallon DEF tank, DEF should be replaced every third or fourth time you fill up.
27 related questions foundHow many miles will 1 gallon of DEF last?
Most DEF tanks require one gallon of DEF for every 50 gallons of diesel fuel, and one gallon will generally last between 300 to 500 miles.
How do you know when to add DEF fluid?
DEF is consumed at a rate of about 2-3% relative to the amount of fuel you are using. This means between 1.2 and 2.0 gallons of DEF will be required for a vehicle with a 65-gallon gas tank. If you have a five-gallon DEF tank, DEF should be replaced every third or fourth time you fill up.
Will DEF freeze in my truck?
Diesel Exhaust Fluid or DEF Fluid
Whether in storage tanks or in equipment, DEF can freeze and possibly cause issues. As temperatures drop below 12°F, DEF will begin to solidify and not work as intended.
Should you keep your DEF tank full?
One thing to keep in mind is DEF will expand when frozen, so it's best not to fill containers completely full to avoid damage to them. After it has been frozen, DEF can be thawed and used with no issues.
Does DEF fluid get old?
It will degrade over time, but if stored at temps between 10 degrees and 90 degrees, DEF has an expected shelf life of one year. You can extend the shelf life to two years by storing at a temperature that stays around 75 degrees. If you see a color change, the fluid is likely compromised.
How much DEF does a DuRamax use?
The 2018 Chevy DuRamax employs a diesel engine equipped with 7.5 liters of DEF or diesel exhaust fluid in a separate reservoir separate from the gas tank.
Can you fill DEF while engine is running?
DEF is vaporized and decomposes into ammonia and carbon dioxide in the exhaust pipe. In order to ensure that owners take their clean-air responsibilities seriously, the Environmental Protection Agency requires manufacturers of new light-duty diesels to interrupt the normal startup routine when the DEF runs out.
Can I put water in my DEF tank?
The DEF will be diluted by the added water, but depending on the ratio of water to DEF, the solution may still contain enough urea to deal with the NOX via an increase in the injection rate.
How much DEF does a Cummins 6.7 use?
Mine (2021 2500) seems to be using about 1 gallon per 1000 miles.
What does Blue DEF?
BlueDEF® Diesel Exhaust Fluid is a mixture of high purity synthetic urea and deionized water that is used in Selective Catalytic Reduction (SCR) systems in diesel vehicles. DEF is used to help convert NOx to harmless nitrogen and water.
How many gallons of DEF does a sprinter have?
Most DEF tanks for a Mercedes Benz Sprinter Van are about 6.6 gallons. You can get a 2.5 gallon refill tank of DEF for about $12.00, which is approximately $4.80 per gallon.
Is there a DEF filter?
The Diesel Exhaust Fluid (DEF) Filter offers a convenient, effective way to deliver clean DEF into your equipment. If DEF is not filtered, urea crystals and other contaminants picked up during storage and handling can cause malfunction of the SCR system.
What is a DEF head?
Essentially, the DEF head monitors the DEF system. The DEF head communicates the quality (or concentration of urea) of the fluid is within spec. It relates that there is, in fact, DEF in the tank (quantity). This part also reports the temperature of the DEF is in a safe range.
What is the best DEF fluid?
The best diesel exhaust fluid meets the Environmental Protection Agency's standards and is free from impurities. Valvoline's Premium Blue Diesel Exhaust Fluid is a top choice because it is compatible with all selective catalytic reduction systems and meets the EPA's near-zero nitrogen oxide emissions levels standard.
How do you winterize a DEF fluid?
Push the DEF pump switch to "Trailer Fill". Allow the pump to run while squeezing the nozzle handle for 30 seconds. Unhook the quick coupler from the nozzle WHILE THE PUMP IS RUNNING. This will evacuate the DEF fluid from the nozzle.
How do you unfreeze a DEF fluid?
Most after-treatment systems have a built-in DEF tank heater that will thaw the fluid during normal vehicle operation. If your vehicle's SCR has a built-in DEF tank heater, turn the vehicle on to initiate the thawing process.
Are DEF tanks heated?
All DEF systems require heating elements to prevent DEF fluid from freezing at temperatures less than 12 degrees Fahrenheit. DEF Heating Pots are designed to quickly return DEF to liquid form, ensuring proper flow through the lines and pump unit.
What is DEF level low?
Low DEF levels will trigger a decrease in engine performance. DEF level is EMPTY and IGNORED. Vehicle speed limited to 5 mph / engine derated. Flashing. DEF level is EMPTY.
How big is the DEF tank on a 2021 F250?
The 2021 Ford F250 can hold 7.4 gallons of diesel exhaust fluid.
Do all new diesels use DEF?
A: Because almost all diesel-powered passenger cars and trucks built since 2010 are equipped with Selective Catalytic Reduction (SCR) and require Diesel Exhaust Fluid (DEF), it is readily available at most fueling stations and automotive parts retail stores.
