Or be mixed. And as the video above shows, some antifreeze suppliers claim mixing their product with others causes no issues. The former combines ethylene glycol with silicates, phosphates, and inorganic acids, Hemmings explains.
The latter, though, contains propylene glycol and organic acids. When the two mix, they create a gel that gums up your cooling system, causing engine overheating and expensive damage. But orange-and-green is the only coolant combination you need to stay clear of, CarBibles reports.
Many automakers today use hybrid-inorganic-organic-acid antifreeze, which combines the properties of both chemistries. This contains added silicates that increase aluminium protection and prevents corrosion. Additives are also present to prevent rusting. To differentiate these a little easier, HOAT coolants are found in yellow, turquoise, pink, blue or purple colors.
It is recommended to be flushed out of the system every , miles or 5 years. OAT works great in systems that were built for it but does poorly in old-style radiators that use lead solder.
It tends to attack and eat destroy the radiator from the inside-out and works too slowly to protect the radiator from corrosion. Never mix them together in your radiator unless specifically designed to be mixes with other types, because in the long run it can end up destroying your system.
Also pay attention to the coolant system capacity as written in your owners manual. Proper coolant level is important. Having less in the system than the designed capacity lowers efficiency and can result in overheating. Mixing different coolants together does not boost their benefits. Also it is believed by some that mixing coolants in a radiator might lead to coolant gelling in the right unfortunate circumstances. Coolant comes in a concentrated formula and needs to be mixed with water at a ratio for it to work, unless it is marked otherwise and already premixed for you.
Tap water contains magnesium, calcium and hardness ions that contribute to scale and deposits in your radiator that reduce cooling efficiency. Also it contains chlorides that can be very corrosive. Change the coolant if it smells burned. Also change the thermostat; it's probably gone bad because it was exposed to overheating or it caused the overheating.
Overheating damages the bi-metallic spring that opens and closes the thermostat valve. Most importantly, find out what caused the system to overheat and repair it to avoid major engine damage. Related Video:. We get it.
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Updated January 04, Featured Video. What's the Difference Between Antifreeze and Coolant?
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