Distilled Water In Coolant Reservoir

Used about 300ml water.

Distilled water in coolant reservoir. I drove the car for weeks now mostly short term drive 30min 1hr the temperature gauge shows fine. For this you ll pour in a mix of half coolant and half distilled water never water from the tap or the hose. However the acidity goes away once the water is heated for the first time if i remember 9th grade chemisty class correctly. This leaves distilled water ionically hungry so it will actually strip electrons from the metals in a cooling system as it attempts to chemically re balance itself.

Whether you know it as coolant or antifreeze this product is really just an additive that when mixed with water serves to broaden the range at which that water will freeze and boil. So now the coolant water is about 35 65. Next week i plan a long drive for. Vw audi strongly recommend using distilled demineralized water when mixing g 11 g 12 and g 12 plus coolant.

Science if you care. As it chemically removes electrons from the metals of cooling system components distilled water eventually does extreme damage that could lead to cooling system failure. True distilled water is slightly acidic. I refilled the extension tank with distilled water cause i found the coolant level is low.

Water is mixed with coolant as the former is capable of transferring heat more quickly and effectively. If you are using 50 water there should be 50 coolant too. Also coolant is buffered so the acidity should easily be neutralized. Distilled water will damage the metals in your engine if used repeatedly.

For example if your car holds 12 quarts you want to install 6 quarts of undiluted. While we do need water that has been removed of these minerals for the coolant system the process of distillation actually will leave the water ionically imbalanced. I heard from someone that for top up purpose only use distilled water instead of coolant because only water evaporates with passage of time not the coolant chemical. 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.

Regular water may contain impurities that may hinder the cooling process unlike the distilled water which is pure.