What Is The Right Water To Antifreeze Ratio For My Porsche?
In order for the engine to function properly, the right amount of coolant is required. Also, the mixing ratio of water to antifreeze should be observed so as to cool the engine efficiently. Before we even get to the mixing ratio, it is important to understand what the coolant is and what it does. Read on to find out more about the coolant, what it does, the right mixing ratio and the recommended change interval.
Coolant Composition
The coolant is a fluid in the cooling system that protects against corrosion, frost, overheating and also lubricates. The main purpose of the coolant is to absorb the engine heat and eliminate it via the cooler. It is a mixture of water and antifreeze compound that comprises of glycol or ethanol. It is also made of silicate, coloring, antioxidant agents and foam inhibitors. The bitter substances are used to prevent people from drinking the coolant. The silicates form a thick protective layer on the metallic surfaces. Antioxidant agents are added for the purpose of preventing corrosion of the components. Foam inhibitors step in to prevent the coolant from any kind of foaming. Glycol is equally important as it keeps hoses as well as seals smooth. It also increases the boiling point of the coolant.
Mixing Ratio
Coolants come in a variety of colors depending on the manufacturer’s specifications and the intended application. The right mixing ratio of water and antifreeze is from 60:40 to 50:50. This must be in line with the antifreeze protection at temperatures of -24oC to -41oC. Note that the minimum permissible mixing ratio of water to antifreeze is 70:30 and the maximum permissible mixing ratio 40:60.
Further increment of the antifreeze proportion is not necessary as it does not lower the freezing point. On the other hand, undiluted antifreeze freezes at -13o C and is not as efficient in absorbing excess engine heat at temperatures above 0oC. When this happens, your Porsche engine will overheat. Owing to the fact that glycol has a very high boiling point and using the right mixing ratio of water to antifreeze, the boiling point of the coolant can be raised up to 135oC.
Water of drinking quality should be used to create the coolant mixture. The reason behind this is that the mixed drinking water used only has a maximum water hardness of 20 o dH. In different circumstances, distilled water may be used. However you should be careful enough to observe the manufacturer’s specifications on the right water to antifreeze mixing ratio.
Additives And Change Intervals
The coolant and its additives get used up with time. This is because, over the years they are subjected to normal wear and tear. For instance, if the coolant turns brown, it indicates that the additives that are in charge of preventing corrosion may have been used up. As a result of this wearing, some manufacturers have specified a fixed coolant replacement interval of 5years for example. However, if you own a new Porsche model it may be filed with long-life coolants. This means that you may not need to replace the coolant unless there is contamination. As such, it is important to consult your user’s manual for information on coolants, additives and change intervals.