Frequently Asked Questions

DEF is short for diesel exhaust fluid and is a urea-based solution that reduces harmful nitrogen oxide emissions from diesel engines. DEF is the reactant necessary for the functionality of the selective catalytic reduction (SCR) system. It is composed of 32.5% high-purity urea, a naturally-occurring element, and 67.5% deionized water. DEF is clear, odorless and safe to handle.

Selective catalytic reduction (SCR) is one of the most cost-effective and fuel-efficient diesel engine emissions control technologies available. For passenger cars and light-duty trucks, it offers the ability to meet strict emissions and fuel efficiency guidelines affordably without compromising driving power and performance. In the commercial trucking industry, including heavy- and medium-duty trucks, the ability to reduce emissions to near-zero levels while also delivering a 3%-5% diesel fuel savings distinguishes SCR as one of the only emissions control technologies that is as good for business as it is for the environment.

A general guide is that for every 50 gallons of diesel fuel you will need one gallon of DEF. A gallon of diesel exhaust fluid will generally last about 300-500 miles.

Contact us for an estimated usage for your specific needs.

We offer DEF in a variety of packaging options including jugs, drums, and totes. Bulk delivery is also available for fleets and high-volume users.

Yes, we offer fast and reliable DEF delivery throughout NYC, New York, New Jersey, Long Island, Eastern Pennsylvania, and the Hudson Valley. Contact us to schedule a delivery.

DEF should be stored in a cool, dry, and well-ventilated area, ideally between 12°F and 86°F. It should be kept in sealed containers to prevent contamination.

When stored properly, DEF has a shelf life of about 24 months. Exposure to extreme heat or sunlight can shorten its shelf life.

Yes, DEF freezes at 12°F (-11°C), but it will thaw and return to its original quality once warmed up. DEF systems in vehicles are designed to handle freezing and thawing.

Yes, all DEF products we sell meet ISO 22241 and are API-certified to ensure the highest quality and compatibility with your equipment.

Our team can help assess your fleet’s usage and recommend the right quantities and delivery schedule. Contact us for a free consultation.

Yes, we provide bulk DEF solutions including totes, drums, and on-site tank installations for businesses that need large-scale supply.

In addition to DEF, we offer a full line of oils, lubricants, antifreeze, windshield washer fluid, and shop supplies for commercial and industrial use.  We are a dealer for Western Global Fuel Cubes, Liquidynamics & Fill Rite.

There's only one place...........DEF WAREHOUSE!!!