Ideally, you shouldn't be adding water to your antifreeze. If you need to top it off, use diluted antifreeze. Distilled water is ok, but normal tap water or bottled water should only be used in a pinch and if you put that stuff in there, you should flush your radiator before it wears things out.Also question is, what happens if you add water to antifreeze?
Your car's cooling system needs coolant to keep it from overheating. Although water can be added to the radiator for this purpose, it's preferable to add a mixture of coolant and water because plain water can boil before the proper coolant will boil, causing your engine to overheat [source: pontiac].
Furthermore, is it OK to top up coolant with water? If your coolant level is too low (below or near the lower mark), top it up using a 50/50 mixture of water and antifreeze (for normal driving conditions), or pour pre-mixed antifreeze straight into the reservoir. You can use clean tap water in an emergency, but antifreeze should be added as soon as possible.
In respect to this, do you need to add water to antifreeze?
Pressure in the system can cause severe burns if the coolant reservoir cap is removed when the engine is hot. Mix the coolant with water (if using from concentrate) — Concentrated engine coolants will need to be mixed with water before use. 'Ready to use' coolants can be added directly to the coolant reservoir.
Does the car need to be running when adding antifreeze?
Yes, run the engine After you do any work involved with draining the coolant you will either have an exact process to remove air from the cooling system or you will simply run the engine. If you don't the gasses (air) will expand at a greater rate than liquid when the engine get's hot.
Is it OK to mix antifreeze with water?
As @Larry has stated straight water or antifreeze are not ideal coolants when used alone. When mixed in a 50/50 ratio the boil/freeze point is ideal for all but the most extreme climates. Although it is more expensive, premixed coolant is available which will allow you to refill the system with the proper 50/50 mix.How much water do you add to antifreeze?
The mixing ratio of water and antifreeze should be from 60:40 to 50:50. This usually corresponds to antifreeze protection at temperatures of –25°C to –40°C. The minimum mixing ratio should be 70:30 and the maximum 40:60. Increasing the proportion of antifreeze (e.g. 30:70) does not lower the freezing point any further.Is coolant the same as antifreeze?
Antifreeze is commonly used as one of the components of a coolant mixture – coolant is generally a 50-50 split between antifreeze and water. Antifreeze (specifically the ethylene glycol, which is its main ingredient) is used to lower the freezing point of the liquid that circulates around the engine of a vehicle.What happens if you use full strength antifreeze?
It is only when pure antifreeze-coolant is mixed with water that its freezing point is lowered. In fact, if pure antifreeze-coolant is used in a car's cooling system, the system loses about 35 percent of the heat-transfer capabilities it otherwise would have when antifreeze is mixed with the proper amount of water.What happens when you mix antifreeze?
This is one of those questions usually asked after the fact, and usually engine damage has already occurred. The green and orange coolants do not mix. When mixed together they form a gel-like substance that stops coolant flow, and consequently, the engine overheats.How often should you top up coolant?
You need to check your engine coolant at least twice a year before summer and winter, ideally. Although, this advice may vary between car manufacturers. Coolant should be topped up whenever the level drops below the guide marks.Can you put tap water in a car radiator?
No, you should use distilled water or better yet, de-ionized water. The reason for this is that tap water has minerals that can deform deposits inside the radiator and the cooling system passages of your engine. And over a long period of time they can lead to over-heating.Is it OK to put straight antifreeze in your car?
Generally a 50/50 mix is recommended, but others say a 70/30 mix of antifreeze and water should be okay. There are a few mechanics who will say using straight antifreeze is just fine, but other vehicle experts will say pure antifreeze could cause some significant damage to your vehicle.Do cars lose coolant over time?
Coolant can deteriorate over time and should be tested to see if it's still good, as it can be hard to tell just by appearances. Even if the coolant reservoir shows sufficient coolant level and testing shows the cooling and antifreeze protection are still adequate, a coolant drain and antifreeze flush may be needed.Do you have to dilute antifreeze?
Antifreeze is often available pre-diluted. But if you obtain concentrated antifreeze, always dilute it with water before adding it to a cooling system. Adding the right amount of water provides the needed protection against both freezing and boiling over.How long does antifreeze last in a car?
When the word coolant is used in can mean a couple of things. Coolant made up of antifreeze and water out of your household tap, 50-50 solution, would last for around 3 years. Coolant made up of antifreeze and distilled (de-ionised) water, 50-50 solution, should last for around 5 years.Can I add antifreeze without flushing?
It is fine to add coolant to the over flow reservoir, just don't over fill it.Where do I put water when my car overheats?
Place a cloth over the radiator cap to protect your hand, and tilt the cap away from you as it opens. Refill the cooled radiator with your spare coolant or water. Do not pour cold water into a still-hot radiator — it could cause the engine block to crack due to the sudden change in temperature.Does antifreeze cool better than water?
While water is the best fluid for cooling, it can cause corrosion. Antifreeze has a lower freezing point and a higher boiling point than water so it helps protect your engine in extreme weather conditions.Will antifreeze kill rats?
The active ingredient in Antifreeze is Ethylene Glycol. It has a sweet taste, and therefore it attracts rodents. It is a powerful poison that is able to kill rodents like chipmunks, rats, mice, squirrels, etc. They drink it and die.Why is my coolant low but no leaks?
Overheated Engine Loss of the liquid can lead to the overheated condition but overheating can also contribute to the coolant loss. Some other things that can cause the losing coolant but no leak are driving uphill, hauling heavy loads, a faulty exhaust gas recirculation (EGR) system, and a worn out water pump.Can you drive with low coolant?
It is not safe to continue driving a car that has low engine coolant. Further coolant leakages in the engine could cause other crucial components to blow up; it also leads to corrosion of engine parts. 
