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89 votes
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Can salt water be used in place of antifreeze?

Uh ... absolutely not. Salt water will cause corrosion with in the engine block. Salt water is an electrolyte, so will pass electricity which will cause electrolysis. Also, it might be able to handle ...
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29 votes

Can salt water be used in place of antifreeze?

Terrible idea. The salt will precipitate and block the radiator fins Of course you know you can dissolve things like salt into water. You probably also know there's a limit to how much it can hold - ...
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13 votes

50/50 Coolant Dilution after distilled water flush?

Yes what you presume is correct. Depending on total volume of coolant (different for each vehicle) how much pure AF I put in, anywhere from 1/2 to 1 gallon, then top off with 50/50 mix. It is better ...
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  • 7,925
13 votes

Using sunshine to cool down the car

If you would like to do that by the use of solar panels, the problem is power. A typical car AC probably uses somewhere between 1000 and 3000 watts. A square meter of typical photovoltaic cells ...
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11 votes

50/50 Coolant Dilution after distilled water flush?

The coolant capacity of the 2004 TOYOTA COROLLA 1.8L 4-cyl Engine Code [R] 1ZZ-FE is 6.9 quarts. To accurately ensure you have a 50/50 mix in your system after a flush (assuming you actually flush it ...
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8 votes

Using sunshine to cool down the car

You have a great idea! And it IS being done. Certain models of the Toyota Prius feature an optional solar roof that powers interior fans that automatically engage when the interior gets too warm. ...
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7 votes
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How do I know where to place my air filter?

You want to be getting as much cold air as possible, as colder air is denser and thus gives your engine more oxygen for a given volume (and thus more power/better efficiency) - that's why the filter ...
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7 votes
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Do you really need to cool down your turbo after hard driving?

Yes, you have to do that. Your turbo heats up to around 900 degrees Celsius under hard driving conditions. When you shut off the car, You suddenly take away the heat source and the ambient temperature ...
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7 votes

what in the thermostat opens when it reaches a certain temperature?

The spring remains largely the same. There is a capsule of thermoreactive "wax" which heats up and expands, acting against the "closed" spring pressure, and causing the "valve" section to lift ...
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  • 12.2k
7 votes
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Yellow foam in my oil cap

What does the oil itself look like? If the oil looks like oil (and not milkshake), just clean the cap and call it a day. More than likely you just haven't been running your vehicle enough. You need to ...
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6 votes

50/50 Coolant Dilution after distilled water flush?

You can use a coolant mixture tester to test the coolant to water ratio. Any auto parts store should carry them.
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  • 8,393
6 votes
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Why is antifreeze mixture not as stated?

The difference you observe is quite notable, so I wondered how reliable it is to just measure the density (which is what your hydrometer does). From the datasheet of your Ford antifreeze, the density ...
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  • 6,997
6 votes
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How is oil in an engine cooled?

While cooling occurs when the oil is in the sump, cooling also occurs in other parts of the engine as well. The main purpose of oil is to lubricate, which reduces friction in the engine (other things ...
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5 votes

Why is antifreeze mixture not as stated?

The first thing to look at is, did you actually mix like amounts to come to a true 50/50 solution? As with any scientific study, you need to make sure your results are repeatable. You bought two other ...
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5 votes

Should I keep the engine running for a minute or two after reaching my destination to cool down?

There is so much speculation in this post. On a modern car, if you seriously think that the manufacturer expects you to leave the car idling after every drive to avoid warping the engine, then I have ...
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  • 1,722
5 votes
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Is it bad to immediately crank the air conditioning all the way up when you start your car on a really hot day?

I live in a very hot climate. There is no issue in turning on a properly-functioning A/C to its maximum setting at startup. Turning the A/C on activates the refrigeration cycle, which at startup will ...
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  • 38.9k
5 votes
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Was sent radiator for automatic rather than manual. Can I simply connect the two unneeded outlets with a piece of radiator hose?

Depends on the design. If those ports are connected to the same fluid channels in the radiator then you will need to blank them or connect together. Many have a separate radiator built into the same ...
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  • 34.4k
4 votes

98 Honda Accord 2.3L

The heat up is probably due to an air pocket inside the cooling system on the engine side. You may try parking the car on an incline with the front pointing uphill, then see if you can add more ...
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4 votes

Using sunshine to cool down the car

The problem you have is efficiency. Solar panel efficiency runs about 10-20%, depending on the type used. Air conditioners range in efficiency, about 30% efficiency is a good working figure. What ...
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  • 14.4k
4 votes
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Is it okay to add straight anti freeze to an engine?

The reason adding straight anti-freeze to a nearly full system is not recommended is because you will have no idea of the actual concentration. Most manufacturers recommend a 50/50 mix of antifreeze ...
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  • 19.7k
4 votes
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Is there any advantage to aftermarket hoods with heat extractors, or are the extractors purely aesthetic?

It really depends on the design of the hood. As I discussed in this answer, the way heat extraction works is via the venturi principle. Only when there is a low pressure area above the hole in the ...
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4 votes
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How long can I run radiator flush in my car?

Radiator flush isn't anything magic. It is just a corrosive liquid that attacks everything in contact with it, to greater or lesser extent. You hope it dissolves the blockage before it makes a mess ...
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  • 2,919
4 votes

Can salt water be used in place of antifreeze?

Salt-water (sodium chloride) solution was, and often still is, used for weight/ballast inside tractor and equipment tires, as that cheap alternative to antifreeze in winter. Very nasty stuff and ...
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  • 181
3 votes

Thermostatic Cooling Fans

Since the fan is thermostatically controlled, it will automatically shut off when the natural air flow through the radiator is sufficient to keep the engine cool. The speed at which this occurs will ...
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  • 400
3 votes

Using sunshine to cool down the car

The Lancia Thesis, introduced back in 2001, had this system. Basically the glass in the sunroof was actually a solar panel which was used to power the A/C fan when the car was parked in direct ...
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3 votes

Using sunshine to cool down the car

Apart from the limited amount of power obtainable from a panel being less than that required to operate anything more than a fan, there are perhaps two other reasons Current solar panels are flat and ...
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  • 31
3 votes

Using sunshine to cool down the car

A simple solution You can achieve similar results by opening all doors for about ~1 minute before entering your car. All hot air inside the car will be replaced with probably still warm air from the ...
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3 votes

Why wont my #1 fan run on my on 2003 Pontiac Grand Am?

Most GM cars will not turn the cooling fan on until 230 degrees or higher. One fan should come on when the ac compressor is running regardless of engine temp, Most of the time the fan relay has failed,...
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  • 7,925
3 votes
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Should I keep the engine running for a minute or two after reaching my destination to cool down?

Pushing the engine hard, particularly with a turbocharged car, causes heat build-up, as you might expect. However, this heat build-up is not even across the engine - for example, the area around the ...
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  • 28.6k
3 votes
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Is there such thing as flushing coolant to often?

If you're asking if this will hurt the car, the answer is absolutely not. Well, I guess there is a risk of wearing out the petcock sooner, but other than that, no. You will not void your warranty if ...
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