To answer the question “Why additives?” let's take a step back and look at what the purpose of a cooling system is in general and the components that are responsible for cooling it down. Because engines produce more heat than they can convert to useful work, engines have a cooling system to remove the wasted heat. The cooling system is responsible for controlling metal temperatures, nonmetallic material temperatures and the temperatures of other engine fluids. In the cooling system, you’ll find a coolant which is composed of water, some type of glycol and additives.
Water is very good at transferring the heat excess during convection cooling but has a low boiling point, high freezing point and is corrosive to metals. To make up for the low boiling point and high freezing point, coolants have glycol used to raise the boiling point and lower the freezing point. These two commodity chemicals make up about 95%-98% of the coolant. You may be asking yourself if 95%-98% of the coolant is made up of commodity chemicals, what differentiates all the coolants on the market?
While additives only make up about 2%-5% of the finished solution, you can think of them as the secret sauce to any great coolant. Because of water’s corrosive nature, adding these corrosion inhibitors into your coolant provides a coating film on the engine blocks to protect metals against cavitation erosion (liner pitting), corrosion, scale and dropout. In other words, coolant additives are important because they protect and extend the life of your most valuable assets.
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Our product line addresses the wide variety of coolant formulations used throughout the world and includes both light-duty (automotive) and heavy-duty (diesel) coolants, rail, and marine applications. Each additive pack is extensively performance tested and meticulously designed for each application.
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This is sometimes referred to as Inorganic Additive Technology (IAT). Corrosion inhibition with traditional chemistries. Such chemicals may include nitrite, nitrate, silicate, borate, phosphate, molybdate and azoles. Delivers fast and consistent protection with inorganic chemicals, typically lasts 2 years or 30,000 miles.
These additives use an organic acid as the primary corrosion inhibitor and heavily depend on various inorganic supplements such as silicate, nitrate, phosphate, and molybdate. Heavy-duty versions may contain nitrite. Three substantial subcategories exist: American hybrids may not use benzoate, a common organic acid in European coolants, but a diﬀerent organic acid and otherwise look like conventional fully-formulated approaches. European styles rarely use phosphate. Asian styles rarely use silicate and may use multiple carboxylates in combination.
These versatile formulas typically last 3 years or 60,000 miles.
Organic Acid Technology (OAT)
These additives deliver exceptional extended life protection (ELC) and rely primarily on carboxylic acids and azoles. They generally do not contain silicate or borate. Heavy-duty versions may also contain nitrite or molybdate, or both, but they still fall in the OAT family.
These packages contain non-hazardous formulas and are designed to last 6 years or 600,000 miles.
Rail & Marine
A borate / nitrite inhibitor treatment that provides superior corrosion and scale protection for today’s modern locomotive and marine diesel engines. Contains a complete corrosion inhibitor system that protects not only the yellow metals, cast iron, and steel in your system, but aluminum and solder as well. This feature lowers maintenance down-time and part replacement costs.
PRODUCTS FOR ANY REGION
ADDITIVE PACKAGES CREATED TO MEET ANY REGION-SPECIFIC REGULATION
Our product line contains different additive packages to meet each region’s unique specification for coolant chemistry. Whether you operate in Asia and prefer a “BANS”-free solution or operate in Europe and prefer a “NAPs”-free solution, we have an add-pack for you.
EXTENSIVELY TESTED TO MEET THE MOST STRINGENT REQUIREMENTS
We test all our products to ensure they pass the most stringent standards. In fact, we take a leadership role at ASTM International (American Society for Testing and Materials International), in gathering consensus and developing standards, which use good science, good engineering, and good judgment to improve performance in coolant additives and performance of light- and heavy-duty industrial equipment.
YOU’RE NOT ALONE.
WE’RE HERE TO HELP.
When you partner with Dober, you gain access to our world-class Technical Support Team. As we begin our journey together, we’ll test your glycol in our lab to find the optimal additive dosage and blending procedure for your solution. As our relationship grows, we check in annually on your blending procedures and ensure your facility has the support it needs. If at any point during our partnership one of your customers has an issue with their product we’ll send samples out to an independent lab to get a complete analysis of the coolant and help troubleshoot any issues.