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Coolant and water expand as they heat. That is why there is usually an expansion tank on newer cars and trucks. That's where you top off your coolant leval (add coolant). If you are getting coolant out the overflow tube it's either too full or your thermostat may not be working properly. I have a Ford van with an E-250 5.8 liter engine and if I add any coolant to the expansion tank it flows out the over flow tube on the radiator if there is no air space in the top of the radiator once the engine has reached operating temp. My solution which was given to me by a ford mechanic was to put no fluid in the expansion tank and to make sure there was 3/4 to 1 inch empty in the top of the radiator, also only top up the radiator from the radiator cap. to within 1 inch of the top. It has worked fine ever since, any time I add too much it automatically discharges it out the overflow tube.
What else can I help you with?
Where is coolant running in the front of the engine?
In cars and trucks the radiator is up front to get air before it can get heated by the engine.
How do I know which engine coolant to add to my vehicle?
All engine coolant is roughly the same but some are advertised for performance cars.
Does the freon from the radiator have anything to do with the coolant?
When discussing the use of freon (or chlorofluorocarbon as it is known) it usually refers to refrigeration and air conditioning. When talking about cars, freon gas is used in the Air conditioning unit. It it sometimes used by racing cars in the radiator in leu of regular coolant (or anti-freeze) but this is not a common practice. On regular cars, coolant is an oil based product placed in the cars radiator and reservoir diluted with water. It's function is to allow the radiator fluid (coolant and water), to be heated and cooled beyond the natural point of water to aid in the cooling of the cars engine.
Why cars engine heated when you go up hill?
it has to work harder
Why need antifreeze coolant in cars engine?
This is used to keep the motor from overheating and from freezing. Thus the name "antifreeze" and "coolant".
Will low coolant cause a cars heater to not work?
Yes. The coolant carries the engine heat to the heater core. Without coolant the heater core does not get warm.
Why do cars use collant instead of water?
Coolant, also known as antifreeze, serves two purposes in a cars engine. (1) Coolant keeps the engine cool. During the summer especially, your engine can get very hot. We all know that when water gets hot enough, it boils. Have you ever seen a car on the side of the road, with a bunch of steam blowing out of the hood? That is a car with an over heated engine. Coolant can still boil like water, however coolant has a higher boiling point than water. (2) Coolant also keeps the engine from freezing. This is very important. If your cars engine has water in it, instead of coolant, and the outside temperature drops below freezing, your engine may become susceptible to becoming frozen. If your engine freezes from sitting in the cold without coolant, the water inside of the engine will expand. When ice expands it has to go somewhere. You engine will crack and will not be repairable. Coolant can still freeze, but unless your using the lowest grade coolant, and your driving through Alaska, your coolant probably won't freeze. How does coolant both keep the engine cool when running, but keep it from freezing too? Its simple; Coolant has a higher boiling point than water (99.7'), and it has a lower boiling point than water (32'). The temperature highs and lows vary with the type of coolant you use. !CAUTION! When your coolant level goes down, due to evaporation or leaks, you may out water in your radiator for a temporary fix. HOWEVER this alters the highest and lowest points of your coolants temperature peak. MORE WATER = WATERY COOLANT
Does water remain in engine block when cars not running?
There is coolant in the engine block when the engine is not running. The engine block, heater, hoses and radiator remain full when engine is not running.
What happens if you drive without any water in the engine?
First of all you shouldn't be using water, you should be using engine coolant. And to answer your question, your engine will over heat and you will not be able to drive. You can do damage to your cars radiator running with no coolant.
What is the purpose of an engine block in the context of a car?
An engine block is used in cars to support the components of an engine. It is also used to transfer heat from friction to the atmosphere and engine coolant.
Where is the coolant thermostat located on a 2002 GMC Envoy 4.2 liter engine?
At the top of the main radiator hose. Just like most cars. This is where it must be in order to prevent and allow coolant from entering the engine.
Where is the oil dipstick on BMW cars?
On my 2000 3 Series, it is right in front of the engine near the coolant reservior.
