It’s worth noting that the lowest freezing point of the coolant is obtained with 66% of glycol in water, and it’s -68✬. As a result, tap water can be used to dilute the concentrate. K2 Coolant concentrate contains special dispersants, protecting the system from the precipitation of limescale contained in tap water. In the case of K2 Kuler concentrate, there’s the possibility of diluting it with regular, undistilled water. When buying the concentrate, you should remember to dilute it with distilled water at a 50/50 ratio. What can prove surprising to us is that the coolant concentrate, without having been diluted in water, has worse parametres and will freeze at -16✬. Ready-made engine coolant means comfort of use as well as certainty that it’s prepared in perfect proportions, which guarantees optimal properties and freezing point of -35✬. Ready-made engine coolant or concentrate? You should never use undiluted, pure coolant concentrate. During the winter months, due to low temperatures, the water will freeze in the cooling system, which will, sooner or later, lead to damage of the seals below the cylinder head or the water pump, or even fractures on the block of the engine. ![]() In the case of the summer period and high temperatures, the water will boil at 100✬ and will prevent further driving. Only in an emergency can we pour water into the cooling system – a permanent replacement of the engine coolant with regular water can lead to costly repairs. In the case of K2 Kuler it’s advised to change the liquid every 5 years or 250,000 kilometres.Ĭan we replace our engine coolant with water? Luckily, it’s not usually necessary to change the whole coolant in the cooling system very frequently. Each manufacturer has different recommendations and it’s worth sticking to them. The best source to consult when determining how frequently to replace the engine coolant is the car manual. How often should we change the engine coolant? Read our article about cleaning injectors: ,Cleaning injectors using K2 Diesel Dictum”. These coolants are characterised by heightened durability (5 years of exploitation) and compatibility with various materials. HOAT are coolants made with hybrid technology, containing organic acids and silicates, creating a protective layer on the surfaces. They can, however, damage lead solders present in older cars, as well as seals made of certain kinds of materials. These coolants have a heightened durability (of up to 5 years) and they’re compatible with aluminium coolers. Thanks to the layer being 20 times thinner than in the case of coolants made with the IAT technique, these coolants are characterised by better heat exchange. OAT are non-silicate coolants containing organic acids, which create a protective layer on the surface. On top of that, a thick layer precipitating on the walls of the system would restrict heat venting. The liquid circulating in the system would detach a portion of the sediment from the metal surfaces and create deposits, which would then float around in the liquid in the whole system, clogging the channels in the radiator at the point of the most narrow flux. The base component of the coolant were silicates, which would precipitate from the coolant and settle on the metal parts of the system. IAT is the oldest engine coolant production technique, characterised by many faults, e.g. production technologyĪccording to anti-corrosion additives (and other) used, engine coolants are divided into: That’s why it’s so important to choose the right coolant and take regular care of its condition and its proper level. Thanks to the chemical substances found in the liquid and additional components, the coolant takes care of the cooling system, protecting it from corrosion, erosion and cavitation.Īt the same time, the engine coolant must be safe for different kinds of materials, from aluminium and brass to seals and rubber hoses. However, venting heat is not the only role the engine coolant plays in the system. In summer, it must cope with higher temperatures and prevent boiling in winter, withstand the frost and not freeze. The cooling system, and the liquid inside it, is responsible for that. While working, the engine emits heat, which must be siphoned off. ![]() What is the engine coolant responsible for? What is it responsible for? What if we don’t have it? How often should we change it and how do we choose the one that’s right for our car? Below you’ll find a guide which will tell you everything you need to know about engine coolants. Often underappreciated, yet it performs one of the most crucial tasks in our cars.
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