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12

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 to be over the 50% mix than under, you can go as high as 70%, so don't worry about putting a little too much pure AF after flushing the cooling system with ...


12

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 generates roughly 150W of power. Even if you covered the entire car with solar panels, they wouldn't be sufficient to power the AC completely under perfect ...


10

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 until you have clear liquid draining out), is to add 1/2 of the coolant as straight coolant (not 50/50 mix), then fill the rest as distilled water. For ...


8

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. The hybrid batteries are not even used at all: the fans run strictly on solar power! Cool (literally). Image Source: resilience.org


7

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 in the picture is surrounded be shields, to prevent it drawing in warm air from the engine bay - I'd assume that area in front that filter is open to atmosphere (...


7

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 falls to around 95 degrees Celsius (the normal operating temperature for a Subaru that has been driven hard). This causes the turbine housing to experience ...


7

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 allowing coolant flow to the heat exchanger "radiator" to lower coolant temperature. If it's flowing through the thermostat, it's going to the radiator for heat ...


6

You can use a coolant mixture tester to test the coolant to water ratio. Any auto parts store should carry them.


6

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 oil does is cool, clean, protect, and cushion). Friction creates heat. Oil reduces the friction by giving two metal surfaces something to slide over so they are ...


5

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 is 1.10kg/l, while pure ethylen glycol has 1.10kg/l. Glysantin is another brand for antifreeze and states 1.122-1.125kg/l for its G48 (sorry, german) This ...


5

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 a bridge to sell you. Heat is going to conduct to contacting metal many orders of magnitude faster than it will conduct to air. The temperature of the whole ...


5

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 have the same load on the compressor regardless of the temperature setting selected. This is part of the reason why the cooling effect isn't instantaneous, ...


4

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 coolant. You can also see if there is a coolant bleed valve as @Lathejockey81 suggests.


4

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 antifreeze testers (hydrometers) to ensure your measuring device was good, but what you didn't do is try to make the mixture again (at least you didn't say you ...


4

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 this means is that it takes 3.3 times the energy to cool your car for every unit of heat you remove. Solar panel efficiency means you need about 6.6 times the ...


4

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 hood will there be any extraction of air (and possibly heat). To directly answer your question, though, yes they do provide an amount of cooling by removing the ...


3

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 vary based on the car and weather on a given day. Never heard of anyone disabling the fan. I have heard of people partially blocking the radiator opening in ...


3

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 sunlight. The more intense the sunshine, the more power for the fans, the cooler the cabin would become. This system was one of a number of things on the Lancia ...


3

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 rigid. Fitting one into the roof of a car may spoil its styling, or its aerodynamics, or both. By adding a panel you are increasing the weight of the car, ...


3

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 outside. If there's no wind, you can turn on the ventilation addtionally. One minute of ventilation usually won't hurt the car battery too much. Plus, it get's ...


3

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, failure can be just a tired relay or the fan is pulling too much current due to being worn out which burns out the relay. Schematic is same for 4 cylinder or ...


3

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 combustion chambers will heat up more. By running the engine at low load or idle, the circulation of the oil and coolant helps to even out this heat distribution,...


3

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 you might be wondering if that was a concern. The only real issue is your pocket book. If you are using the specified coolant from the manufacturer, there's no ...


3

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 concentrate to water. Mixtures with too much water may not provide adequate boil over or freeze protection. Mixtures with too much antifreeze concentrate may ...


3

Your second thought is the answer. It's all about the load and how the regulator deals with it. As the demand goes down, so does heat and less of a power demand upon the engine. EDIT: (To provide more context.) To put more emphasis upon what I'm saying, I'll reference this article which talks about how the alternator and regulator work: Lights, ignition,...


2

Dobey has already told you why you shouldn't use an intercooler as a CC radiator. But let me add something more: a charge cooler does the same job as an intercooler. So instead of using a charge cooler fed by an intercooler, why not just use the intercooler to cool your air? It's what it was designed to do. If you're really worried about the air temperature, ...


2

No, you cannot use an air/air intercooler as a air/water heat exchanger. It's not necessarily that you will see any particular corrosion from filling an aluminum air/air intercooler with 50/50 antifreeze/distilled water mix, but that it will just be horribly inefficient. An air/air versus air/water system have different designs and materials. The diameters ...


2

If I understand correctly, your thermostat was removed? In that case, have a new one installed. Aside from that, there could be lots of reasons for your engine running hot: A blockage in the cooling system, e.g. if there's something blocking the radiator or one of the pipes have collapsed. not enough coolant. losing pressure in the cooling system, e.g. if ...


2

Several things happen when you add antifreeze to water: Reducing the freezing point Well, this is obvious. While pure water freezes at 0°C, ethylenglycol can put it down to -55°C for a 60:40 (6 parts antifreeze, 4 parts water) mixture. However, it's interesting that the freezing point goes up to -15°C again, if you add more antifreeze: (Sorry for the ...


2

Ethylene glycol based coolants should more correctly be called anti-freeze/anti-boil as they lower the chemical potential of the solution when added to water, making it less likely that the resulting mix will move to either the gas phase (boiling) or the solid phase (icing). I have lived for a number of years in a region where the lowest temperature in ...


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