Best Coolant To Water Ratio

If the coolant is not pre mixed you will have to follow directions on the container.

Best coolant to water ratio. In non automotive cooling applications we use ethylene glycol solution in whatever ratio with water that is required to keep it from freezing. Jump to latest follow 1 4 of 4 posts. This standard ratio is an attempt to encompass as much of the nation as possible and will provide great anti freeze and anti corrosion protection. Pure coolant has none of these properties but it becomes a magical elixir for your engine s cooling system when it is mixed with water at a 50 50 ratio.

Where you fall on the spectrum of 50 50 the most coolant you d want to run where it never freezes and pure water is up to you. My reccomendation is that if you run more than 70 water you should carry fluid with you just in case. A higher water to antifreeze ratio increases the ability of the mix to cool the engine but the mix will not do very well in cold weather. For improved cooling in hot weather we should use less antifreeze and more water perhaps going to a 25 75 or a 20 80 mix ratio.

Increasing the ratio of the antifreeze to water such as a 70 30 mix will lower the freezing point of the mix down to minus 72 degrees fahrenheit but it will also lessen its ability to cool the engine. This gives the coolant an adequate amount of freezing and boiling protection while also providing the corrosion protection the engine and radiator need. However this ratio isn t optimal in warmer climates for cooling as discussed earlier. Vehicles such as cars and light trucks require an antifreeze to water ratio of 50 50.

In most cases coolants that are not pre mixed will be required to be mixed with distilled water at a quantity. The more ethylene glycol we used the less the heat transfer was and we were more interested in getting maximum heat transfer from our processes to the air. In this ratio the mixture will not freeze until temperatures reach minus 30 degrees f and will not boil until 275 degrees f. In most places including your local gas station you can buy pre mixed coolant which is usually 50 50 anti freeze and water.

Best coolant to water ratio. Joined aug 4 2005 962 posts. For instance most unmixed coolants will require that you mix the content at ratio 1 9 of coolant and water respectively. Everyone knows antifreeze prevents corrosion and corrosion is bad.

The premixed coolants are. This property is very important to your engine s cooling system. The general recommendation by antifreeze manufacturers is to have a 50 50 antifreeze and water mix.