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An alcohol based fluid that is miscible in water and used to remove heat from the engine. Also see the [cooling-system] tag for related components such as the radiator and water-pump.

5 votes

Coolant boiling

You likely have trapped air in your coolant/antifreeze system. But before I tell you how to fix it, please know that you should NOT mix different colours of anti-freeze. … Now, to get rid of the trapped air, all you need to do is Unscrew the cap on the coolant/antifreeze reservoir and start your car. …
Captain Kenpachi's user avatar
1 vote

Low coolant in freezing weather

Winter conditions require you to have 3 parts antifreeze to 1 part water in your coolant tank. High heat summers require the opposite: 1 part antifreeze to 3 parts water. …
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4 votes
Accepted

Where does the coolant go?

If it happens over the course of a couple of months, it probably means that there is a very tiny leak somewhere and when the coolant gets hot enough, some of it escapes as steam. … usually drinks up the coolant fairly quickly. …
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0 votes

Air trapped inside radiator after adding coolant

The rev surging might be an idle-control valve trying to do what it does. Have a good mechanic take a look.
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2 votes

Mixing antifreeze?

Anti-freeze is cheap enough for you to flush your coolant system and fill it up with the type you want to put in. …
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0 votes

What's making my coolant overflow?

Two things come to mind: 1) Your cap isn't sealing properly or the spring has worn out, meaning you don't have enough pressure in your coolant system, allowing the coolant to expand and overflow. … Also look out for "chocoloate milk" in your oil or clowdy coolant, which are signs of a blown gasket. …
Captain Kenpachi's user avatar
3 votes

Running with straight water as coolant in the summer. Is it fine?

Yes, you can run straight water, but your coolant boiling point will be lower AND you'll corrode the inside of your engine and destroy your water pump. …
Captain Kenpachi's user avatar
2 votes
Accepted

Second burst ancillary hose on Z20LET engine

Engine sputtering under load White smoke from the exhaust bubbling coolant milky coolant in the reservoir chocolate milk-like deposit on the dip stick and/or rocker cap(yellow cap pictured) The only … other thing to do is to have a Carbon Monoxide test performed on your engine's coolant. …
Captain Kenpachi's user avatar
2 votes

Can I use an intercooler as a charge cooler radiator

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 coole …
Captain Kenpachi's user avatar
3 votes
Accepted

Engine's Normal Operating Temperature

Yes, it's normal. Maybe just a tiny bit on the cool side. But if you're in traffic a lot that cooler thermostat is a good thing. All the cars I've owned would run between 85 and 95 degrees Celsius. 85 …
Captain Kenpachi's user avatar
4 votes

Coolant spills out of the overflow tank at high pressure

When they fail in a certain way, they allow exhaust gases to get into the coolant circuit instead of escaping out the exhaust valves like the Lord intended. … Seeing as you flushed the system and replaced the cap, it is unlikely that you have air trapped in the coolant circuit (I just have a feeling you know about "burping" a car when you replace the coolant
Captain Kenpachi's user avatar
5 votes

STEAM coming from under the hood?

Your car overheated and the coolant leaked out of the overflow bottle. It happened a couple of times with my Opel Astra Coupe and my Subaru Forester too. … The danger here is that BECAUSE the car overheated and all the coolant was lost, you may have a warped cylinder head that may cause a blown headgasket if it hasn't blown already. …
Captain Kenpachi's user avatar
3 votes

What causes a low coolent temp light to come on a 2012 Honda civic

Check your coolant level and keep an eye on your temperature gauge. A car will run fine with an overheating engine right up to the point when the engine seizes. …
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