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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35 votes

Do mobile air conditioners exist for cars?

Can't believe no one has posted this yet, but: Source: https://geekologie.com/2019/07/meanwhile-in-florida-a-car-with-a-window.php
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  • 1,187
31 votes
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Why are the blades of car radiator fans unevenly spaced?

It isn't something restricted to old vehicles; my Lumina has fans like this, though not as irregular as the picture shown in the question. As far as I can recall, the chief reason cited for this by ...
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  • 39k
29 votes

Do mobile air conditioners exist for cars?

Practically no. An air conditioner is a heat pump: it takes heat from one location and pumps it to another location where it can be radiated. This takes a fair amount of power: a 12 volt auxiliary ...
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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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24 votes
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Is it Safe to Drive With Low Engine Coolant?

"Is it safe to continue driving with low coolant as long as I continue to watch the temperature gauge? " No, the temp sensor reads coolant temperature, if the coolant gets low enough to be below the ...
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  • 7,950
23 votes

Do mobile air conditioners exist for cars?

Back in the 1940's and 1950's there used to be a product called a "Swamp Cooler". This was effectively an evaporative cooler that you sandwiched into your partially open car window. As you drove, ...
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16 votes

Why does my 2006 Chevy Equinox have no heat when all repairs for the heat has been made?

It sounds like the approach to solving your problem so far hasn't been very systematic or "evidence based" – at least the list of parts replaces suggests that the people working on it have been using ...
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15 votes

Do mobile air conditioners exist for cars?

The air conditioner in a car draws several kW of power. A cigarette lighter socket is limited to ~150 W, which is far too little to noticeably reduce the temperature in the car. Things you can do to ...
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  • 4,412
14 votes
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How do I troubleshoot the source of oil in my coolant?

Number one answer is always Head Gasket. The reason is that there are oil and water passages in close proximity, being separated by a gasket (which might just be flimsy paper or rubber, but is often ...
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  • 1,925
13 votes
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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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  • 7,950
12 votes

Is it Safe to Drive With Low Engine Coolant?

If you do not have any leaks, then your coolant is most likely getting burned and/or going into your oil. My guess is going to be a problem with your head gasket or some crack or warping in the head. ...
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12 votes
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How long should I wait for engine to cool down before I can check coolant?

The exact time taken depends upon various factors: The ambient temperature The amount of heat insulation in the engine bay Volume of coolant in the engine How hot the engine got while driving ...
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  • 9,773
11 votes

Should Multiple Coolant Hose Leaks in a Short Time Worry Me?

I believe (and this is a gut check) you can chalk this up to deteriorated hoses which all have gone bad in the same period of time (coincidence). Each has probably served a long fruitful life and now ...
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11 votes
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Should Multiple Coolant Hose Leaks in a Short Time Worry Me?

Remember that the reliability of any system of components will only be as strong as the weakest link. Coolant lines are pressurized under regular operation and the walls of the hoses will weaken with ...
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  • 39k
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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11 votes

Do mobile air conditioners exist for cars?

I have used home made ac units that consists of a cooler, fan & ice (see video). It works GREAT for a hour or so depending on how hot the day is. You could get a 12V DC fan that plugs into your ...
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10 votes

How can I test my thermostat?

Failure Modes Mechanical thermostats fail in one of two ways: Stuck-closed The pintle/spring doesn't retract to permit flow at the set-point temperature that is usually stamped on the thermostat ...
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  • 39k
10 votes

Is it Safe to Drive With Low Engine Coolant?

First, you do need to find out where the coolant is going. There is UV dye that can help with this, and if your car is smoking, that could be a sign that the coolant is leaking into the engine rather ...
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10 votes

Oil Cooled vs Water Cooled

I am assuming that by cooling you are referring as to which Engine cooling systems are better in particular scenarios... Oil-cooled: Traditional Oil-cooled engines are most commonly found in passenger ...
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  • 101
10 votes
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Rusty coloured coolant?

From your description it doesn't seem like oil. As for why it continues to look brown, you probably haven't flushed it enough times. When I had an oil-in-coolant condition on one of my vehicles, it ...
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  • 39k
9 votes

Pros and cons of using straight antifreeze?

As explained on this page, using pure antifreeze alone will not do the job: No matter which type or color your antifreeze is, it will transfer heat away most efficiently when blended with the proper ...
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9 votes

How to test if head gaskets are blown?

To add to Anarach's answer... There are 4 things around a head gasket - combustion chambers (cylinders), oilways, coolant-ways and the outside air. They can fail between any two (or more) of these, ...
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9 votes
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Why does my overheating car cool off on declines?

You may have developed an air bubble in the system, probably from the reservoir falling off, or from the mechanics not bleeding the cooling system after emptying it. There'll be a pocket of air in the ...
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  • 1,576
9 votes

Is it Safe to Drive With Low Engine Coolant?

Its not good to run with low coolant, even worse to run with no coolant. Actually it can be quite disastrous (possibilities include blown head gaskets, seized pistons and a number of expensive ...
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9 votes

Should you change a thermostat when changing your water pump

You don't need to, but since your coolant system is already drained, it would be a good time to. Standard thermostats are only about $10 and a $2 gasket. Changing your thermostat is typically 2 ...
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  • 8,413
9 votes
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Evans Waterless Coolant

Hmmm, about the benefits/drawbacks, I first wanted to complain that this stuff only has a heat capacity of 2.6J/(g * K), while water has 4.2J/(g * K). Water has an exceptionally high value, which ...
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  • 7,007
8 votes
Accepted

Oil Cooled vs Water Cooled

Oil Cooled and Water Cooled are terms used by Manufacturer's to differentiate the slight difference between the cooling systems. Note that this is specific to only motorcycles as almost all of the ...
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  • 8,926
8 votes

Should I get 2nd Opinion on head gasket issue?

It is ALWAYS good to get a second opinion. I would highly recommend taking it to another shop and have them tell you what they think it is even if you believe the first shop to be right. That being ...
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  • 1,948
8 votes

Will driving car without coolant cap do long term damage to car?

If you didn't overheat the car, then you've done no damage. The radiator cap seals the system and allows pressure to build (to a point), which raises the boiling point of the coolant. This allows it ...
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