Mixing the two glycols in the water can result in erroneous freeze point readings on a refractometer or hydrometer. Ethylene glycol is perhaps the most common because it has better heat exchange properties than propylene glycol, which is less toxic.
Glycol (ethylene or propylene glycol) is added to water to withstand freezing temperatures and to raise the boiling point so that the engine stays cool during operation. Because vehicles in many parts of the world can experience ambient temperatures well below ‘freezing’ during winter, and engine operating temperatures can reach well above water’s boiling point while in use, heat exchange and freeze protection are critical. Water is inexpensive and the most effective heat exchange medium, but has a relatively narrow temperature range from freeze point to boiling point. Cars and trucks with internal combustion engines burning gasoline, diesel and natural gas fuels use coolants. Liquid circulating around the engine absorbs heat created by combustion, then carries it away from the engine where it cools as it passes through a radiator. Automotive coolants are generally made of three key components: water, glycol and an additive or chemical inhibitor package. While a coolant can be made of a liquid, or other substance depending upon the application, let’s focus on those used in engines by the automotive industry, since they’re probably the most common – or at least the ones people are most familiar with. With this perception of complexity comes a laundry list of questions: “What’s the difference between a red coolant and a green coolant? What will happen if I mix the two? Is ethylene glycol the same as propylene glycol?” In this article we’ll try to answer these and other questions by breaking things down into bite-size chunks that are easy to understand. But in a market of ever-increasing technologies, OEM requirements, and even colors, the products can seem quite complex. They provide freeze and boil protection and they prevent corrosion.
#Heavy duty green coolant free
It is silicate free for improved pump life and contains no environmentally harmful nitrates, borates, phosphates, amines or nitrites. The product is dyed a distinctive red-orange colour for ease of identification. It is silicate free for improved pump life and contains no environmentally harmful nitrates, borates, phosphates, amines or nitrites.Įthylene glycol based antifreeze/coolant premixed at 50/50% weighted volume incorporating an advanced formula technology with virtually non-depleting organic acid corrosion inhibitors. The product is dyed a distinctive Green-orange colour for ease of identification. Ethylene glycol based antifreeze/coolant premixed at 50/50% weighted volume incorporating an advanced formula technology with virtually non-depleting organic acid corrosion inhibitors.
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