89 votes
Accepted

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 ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
31 votes
Accepted

Why would a mechanic crank heater to maximum

If the cooling system is drained, it needs to be refilled and all air needs to be removed. The mechanic turns the heater on to allow coolant through the heater core to be sure all air is being removed....
Jupiter's user avatar
  • 3,207
29 votes
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What is the point of changing coolant if it gets constantly replaced?

The logic behind replacing the coolant, rather than just topping it off, is to remove impurities. If the reason you have to add to it is that there is a slow leak somewhere, you may get by with just ...
user33191's user avatar
  • 306
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 - ...
Harper - Reinstate Monica's user avatar
24 votes
Accepted

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 ...
Moab's user avatar
  • 7,990
23 votes

What is the point of changing coolant if it gets constantly replaced?

You shouldn't be constantly replenishing the coolant - if you are, there's probably something wrong with your car! Modern car cooling systems are designed to be almost maintenance free, so you ...
Nick C's user avatar
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23 votes
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Switching engine coolant with similar properties oil

There's a very straightforward answer to this question: Water has a much, much higher capability to transfer heat than oil. Even if you were able to overcome the safety and design issues brought up ...
dwizum's user avatar
  • 1,144
14 votes
Accepted

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 ...
Jim W's user avatar
  • 1,935
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 ...
Moab's user avatar
  • 7,990
13 votes
Accepted

What is this sticker on the coolant expansion tank trying to tell me?

There are two kinds of coolant long life and conventional. Conventional coolant uses silicate salts as a "preservative" per se. They help to reduce corrosion and what not. Long life coolant uses ...
vini_i's user avatar
  • 16k
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. ...
agent provocateur's user avatar
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 ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
10 votes

I've got oil in my coolant but no coolant in the oil - Ford Triton V10 Motorhome

If it has an engine oil cooler, that is most likely the problem, a faulty oil cooler, some are made into the radiator, others have heater hoses running to a remote oil cooler, and a few I have seen ...
Moab's user avatar
  • 7,990
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 ...
JPhi1618's user avatar
  • 13.2k
10 votes

My Toyota dealer replaced my water pump and failed to replace my coolant

It is unlikely that you would be able to drive a car without coolant for three weeks. I suspect what actually happened is that there was a coolant leak, possibly (probably) as a result of the work ...
Steve Matthews's user avatar
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 ...
Jay Vyas's user avatar
  • 101
10 votes
Accepted

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 ...
Zaid's user avatar
  • 39.1k
9 votes

Losing coolant fast after just fixing radiator

They may not have bled your cooling system properly As a possibility, if you had air trapped in your cooling system it would expand as the engine approached operating temperature. It would ...
DucatiKiller's user avatar
  • 32.9k
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 ...
technosaurus's user avatar
9 votes
Accepted

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 ...
sweber's user avatar
  • 7,057
9 votes

I put Adblu in radiator coolant tank in Peugeot Boxer 435 Onnicar

ADBLU is a mix of uric acid and water, and you don't want acid in your cooling system as it can cause corrosion. It's not a disaster, you just need to drain your coolant out of the system and refill ...
GdD's user avatar
  • 16.9k
8 votes

The purpose of covering the grill during cold weather

This is old, but some of these comments annoy me. I live in Fairbanks AK and drive a 90's diesel Chevy. It takes a 15 minute idle period (in addition to at least an hour with the block heater plugged ...
Justin in Alaska's user avatar
8 votes

Will my 2002 Mustang make it from California to Iowa?

Any car in good operating condition should be able to make the trip. My advice would be to: 1) Fix any known problems with the car. This includes making sure the spare tire is in good shape and ...
Tom Penny's user avatar
  • 410
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 ...
Shobin P's user avatar
  • 8,936
8 votes

Smoke coming from hood. Car turned off . wrong coolant was added..Why wont car turn on or what could be the issue

I'm not a believer in coincidence, so I am 99.9% sure there is a relationship between the oil change and the problems you are having. It sounds like there has been a catastrophic failure of some sort, ...
jwh20's user avatar
  • 12.1k
7 votes
Accepted

Coolant Reservoir

This particular bottle is knows as a degas bottle. The reason it has a strange shape is two fold. First, the bottle needs to fit somewhere and the shape helps that. Second and more important is that ...
vini_i's user avatar
  • 16k
7 votes

Will my 2002 Mustang make it from California to Iowa?

If your normal journeys get the car up to temperature and you have trusted it so far, then a long journey should make no difference, in fact cruising speeds should be easier on the car than constant ...
HandyHowie's user avatar
  • 25.2k
7 votes

Is it Safe to Drive With Low Engine Coolant?

If you can't see any obvious signs of leaks, or steam coming from anywhere if you run the engine, a likely cause is a cracked cylinder head gasket, which is letting the coolant into the cylinders and ...
alephzero's user avatar
  • 2,944
7 votes
Accepted

How to remove coolant hose from T piece

Yes, you need to cut them - difficult but possible with sidecutters, they do make special cutters for these, but you can grind them : be very careful where the sparks go : cover everything... For ...
Solar Mike's user avatar
  • 34.6k
7 votes
Accepted

Is it feasible to use the exhaust heat to warm the engine block?

The problem you'll have in extracting heat from your exhaust gases to heat your engine is twofold: Gases don't generally have a high specific heat capacity so though it's hot, it's not a lot of heat ...
Caius Jard's user avatar
  • 1,145

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