Diesel Exhaust Fluid


Leading the way in DEF

Dennison Lubricants is the premier Diesel Exhaust Fluid (DEF) distributor and manufacturer in New England. Our high quality certified product is enhanced by our specialized delivery, equipment, and staff to exceed all of your DEF needs!

Oilzum DEF

Oilzum DEF is certified by the American Petroleum Institute (API). The certification recognizes that Oilzum DEF meets the stringent quality standards that engine manufacturer service warranties require. The brand name Oilzum has deep history in New England for delivering high quality products. The Oilzum DEF product line includes:

Bulk, Drums, Totes, and 2.5 Gallon Containers.

Truck and highway at sunset - transportation background

About DEF & Equipment

DEF is an aqueous urea solution used in Selective Catalytic Reduction (SCR) that reduces diesel exhaust emissions into nitrogen, water and carbon dioxide (CO2). In addition, SCR can be found on 2010-present model trucks, diesel pickups, and SUVs. DEF was designed to meet 2010 EPA emission requirements in North America and helps improve fuel economy. SCR systems cannot run without DEF.

In addition to DEF, we can provide a variety of pump and tank systems depending on your individual DEF needs.

Equipment includes:

  • Hand Pumps
  • Electric Tote and Drum Pumps
  • Bulk Tank Systems
  • DEF Metering Systems
  • Retail approved DEF Installations

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