This new antifreeze is commonly called ELC or Extended Life Coolant. There are two formulas of ELC on the market and that is where a lot of confusion lies. You will now find Non-Organic and Organic Ethelyne Glycol based antifreeze in our equipment, with the Non-Organic variety being available in both conventional and ELC.

Before adding or changing anti-freeze we must identify what is in the equipment so the correct anti-freeze is used. To help us identify what is in the equipment, the anti-freeze manufacturers have established industry wide color codes, the coolant is dyed from the factory and will only change color if contaminated.

GREEN - This is a conventional, non-organic antifreeze. It will be found mostly in older equipment. This antifreeze should be changed every 3 years.

PINK - This is a conventional, non-organic, ELC coolant. It is found in a lot of the Mack trucks.

ORANGE - This is an organic ELC coolant. It is formulated for Gasoline engines only. It is found mostly in GM vehicles.

RED - This is an organic ELC coolant, formulated for both gasoline and diesel engines. It is found in newer Caterpillar equipment.

Organic and non-organic coolants must never be mixed together. A thick, sticky gel can develop in the cooling system if they are mixed together. We are currently switching coolant lines so as to be better able to service our equipment. If you have any of the Northland Diesel-Guard or Diesel-guard XL, remember to only use it in GREEN and PINK cooling systems, DO NOT ADD IT TO ORANGE OR RED SYSTEMS !!!