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

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53 views

Strange noises from AC/Dash board

So I'm hearing a creepy/whooshing sound coming from the dash board and the sound disappears when I turn off the AC. Time to have the AC system replaced? Recently had coolant replaced. Anyone ...
9
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3answers
1k views

Car won't reach operating temperature

Here's a seemingly simple problem - I noticed that the temperature gauge of my mother's 2004 Opel Meriva 1.7CDTI won't ever climb above minimum. I checked the OBD readings to see if it was a defective ...
10
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1answer
119 views

The purpose of covering the grill during cold weather

In some countries it is quite popular to cover up the front grill in winter (especially on diesel engined cars). As I understand the intention is to inhibit airflow to the radiator, but why would you ...
10
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1answer
123 views

Coolant Reservoir

Two questions, One, is there any reason why some coolant bottles are shaped in this way? Two, if this coolant bottle was placed on its side such as in the image below for example would coolant ...
7
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3answers
608 views

What actually happens when there is not enough coolant in a car engine?

I know that a lack of engine oil can destroy an engine, so I was curious as to whether it is just as bad to drive a car with a very low engine coolant. What is engine coolant? What exactly are all ...
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0answers
83 views

My mechanic forgot to put Coolant and now my car is not work! what can i do? or who should i blame [closed]

I had a small accident and I hit the whole front of my car and the radiator was damage. I took it to my friends mechanic (which i though i could trust) and asked for an estimate. He owes a Bodyshop ...
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4answers
5k views

What to do when antifreeze is in the oil casing

My son accidently poured some antifreeze into the place where the oil goes now the car runs with ticking when its idle
8
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1answer
150 views

BMW M52 coolant refilling

I have a BMW 328 -98, or in other words, an E36 with the M52 engine. I cannot for the life of me understand how the coolant system works on this engine, and therefore not how to properly top it up ...
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3answers
6k views

Pros and cons of using straight antifreeze

I've heard from some people that they use straight antifreeze in their cooling systems and not 50/50. What are the pros and cons of doing that? E.g. does it reduce exposure to corrosion?
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1answer
123 views

What exactly is meant by “engine coolant”?

I know that engine coolant is a fluid in the engine used to dissipate heat spots and keep the engine cool in general as the moving parts generate heat. In this context, I would call the oil an "engine ...
5
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1answer
71 views

How to flush coolant with only access to expansion tank?

OPEL CORSA B Sedan 1.6 IE 1999. I would like to flush the coolant and bleed my brakes. For the coolant, I have bought German HEPU antifreeze, Anyways, I only have a reservoir bottle and I do not ...
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1answer
643 views

White smoke coming from hood in cold weather at a stop light? [2003 Ford Taurus SE, Vulcan Engine]

As winter approaches, I have been noticing that on some occasions in which it is relatively cold outside (20-30 degrees) ,and also early morning or night time when the temperature is low, that my car ...
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4answers
953 views

How can I fix my cracked radiator temporary for a trip? Is there any way to do it?

My car is a Chevrolet Lumina 2001. About 2 months ago I changed the radiator of my car because it was leaking, the guy that changed the radiator got the radiator in a junk yard place for cheap price. ...
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1answer
57 views

How can I improve water flow within this diagram? [closed]

I'm hoping I'm asking this in the right place. I'm trying to determine how I can improve the water flow within a project I'm working on. The flow starts out at the large water pump on the bottom ...
5
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2answers
105 views

Water underneath floor carpet - Mazda Protégé 2002

I just bought a Mazda Protégé 2002 and a few weeks later I noticed a damp spot on the back passenger side floor. Very wet and soaked. Later I noticed the smell grew larger and the vapor on the glass ...
2
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1answer
33 views

2000 Chrysler LHS coolant tank is giving off a bubbling sound when I park the car.

I recently had my thermostat replaced due to hearing bubbling in my coolant tank once I turn the car off I also noticed on the opposite side other coolant tank there was leaking on the ground not a ...
5
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2answers
346 views

How, and why, do you test coolant concentration?

In the owner's manual for my 2001 Ford F-150 (5.4L), in the section on "Adding engine coolant", it specifies the type of coolant to be used, and says it should be mixed 50/50 with distilled water. It ...
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1answer
20 views

1978 Ford 302 is using a lot of water

My 1978 Ford 302 is using a lot of water. There is no oil in the water or no water in the oil and I cant find any leaks. What can I do?
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0answers
40 views

Saying its running hot but full of coolant and not over heating

2005 Hyundai Elantra. Says its running hot but has coolant and so far hasn't over heated and also can't turn on heat in car because smoke pours from vents into the inside of car.
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8answers
28k views

My car's coolant temperature reaches almost 100 C / 212 F in a fast pace

Today, after a very hot day, I saw that my coolant was almost reaching 100C/212, I pulled over, stopped and took a look over the hood. The very little water that remained in the coolant tank was all ...
4
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1answer
147 views

Car is heating while Coolant Temp Sensor is normal

I bought a BMW 318i and the car heated twice so far while the coolant temperature sensor is normal. If we exclude the possibility that the sensor is malfunctioning, what problem would cause the ...
3
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2answers
153 views

Audi A4 1.6 2000 Coolant level sensor flashing

I have a problem with the coolant level sensor. After a minute of driving the temperature sensor on the car starts flashing and also alerts with beeping. Of course the coolant tank level is normal. ...
4
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1answer
558 views

Coolant below minimum every 6 weeks - Mk4 VW Polo

This is about my VW Polo (mk4). It's been a cat C in the past after taking a knock to the front bumper. It needs the coolant topping up every six weeks (ish). I've been carrying a bottle of water in ...
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3answers
22k views

Coolant level is below “low” in the expansion tank, dealership service says this is normal?

I took my car to the dealership for an oil change and inspection, which includes the fluids being checked and topped off. After the service, I took a look at the fluids in the car. There is a tank ...
2
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1answer
127 views

ISUZU CUBIC mixing oil in coolant

ISUZU CUBIC - CITIBUS ENGINE - 6hh1, 8300cc, 6 Cylinder, No Turbo I have this Isuzu with the above description. It is mixing oil and water coolant. I did not find water in the crankcase but found oil ...
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2answers
149 views

1996 mazda 626 leaking coolant

My mazda 626 was leaking coolant. I replaced the radiator for there is clearly a hole on it. It worked fine for about a month. Then I see some leakage again. And this time it is around the right side ...
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2answers
450 views

Ideal Coolant Temprature for BMW F20 116i

I've a BMW 116i F20 2012(turbocharged). Bought it at 2012. After two years of using it as default I got it coded with Gorilla so that it's default hp of 136 bumped up to 210. Now it's close to 29K in ...
2
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1answer
117 views

Coolant light is on even after topping off

2000 Pontiac Grand Prix Gte - My low coolant light came on so I parked let it cool down went to auto store n got the Dexcool antifreeze and filled it past the hot marker. Drove it on the interstate ...
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2answers
99 views

Why is antifreeze mixture not as stated?

To keep things short I poured 200ml of concentrated genuine ford super plus premium antifreeze (Ethylene glycol based) within a bowl. Then added 200ml of water to dilute the solution to a 50/50 ...
4
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1answer
22 views

Coolant type for 1977 Diesel

I have a marine 1977 Perkins T6.354 6 cyl, 6 liter turbo diesel. There are different types of coolant available and I've done significant research into this question and have not found a clear ...
4
votes
5answers
16k views

F-150, heater will blow hot, then cold

F-150, heater will blow hot, then cold and then heat gauge will rise to extreme high, will boil over then gauge will drop to normal. Just had it flushed and no change. After driving for about 10-15 ...
2
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2answers
120 views

Coolant disappears from coolant reservoir but no leak observed

I just replaced the water pump in my 2005 Ford Escape V6. I discovered that each time I fill the coolant reservoir with coolant and drive the car, by my next stop the coolant reservoir will be ...
2
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1answer
45 views

I put oil in the coolant by mistake in 300c hemi engine chrysler

I put a quart of oil in the coolant compartment in my 300c hemi Chrysler engine. Can I drive it about50 miles without hurting my engine to get my engine flushed
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0answers
159 views

E46 rough idle with coolant light on

The car is 2001 BMW 330i. I have changed ignition coil, spark and IAC. Last week, my car experienced rough idle. Then I changed the coolant temp sensor today. After adding coolant and bleeding, the ...
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4answers
156k views

Can I drive a car with only water and no coolant if it has a leak?

Recently, I was informed that a car I share ('02 Nissan Sentra) was close to overheating. I was told it gets close to the upper limit very quickly upon running the car. When I inspected the vehicle, I ...
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1answer
255 views

2010 Mini Cooper S - Coolant leak from thermostat housing

For more than a month, I have been noticing coolant leaking from the thermostat housing. This was identified by the dealer and another Mini specialist mechanic. The dealer wanted the housing to be ...
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3answers
434 views

1996 Rav4 not warming up properly when driving and heat not hot

I have a weird problem. I recently changed the radiator and flushed the whole coolant system during replacing the radiator. I also flushed the heating core by itself. The thermostat was recently ...
3
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2answers
70 views

No radiator fluid in resevoir

Obviously you shouldn't drive with no coolant, because in most cases obviously your car will overheat, blow a head gasket and all that fun stuff. I drive a 4cyl 2.5L Ford Ranger. One time I realized ...
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12answers
87k views

Is Prestone “All Makes/All Models” coolant *really* compatible with all models?

My car's manual says to use the blue Honda coolant: Always use Honda All Season Antifreeze/Coolant Type 2 [MSDS]. This coolant is pre-mixed with 50 percent antifreeze and 50 percent water. ...
2
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1answer
422 views

How does the coolant disappear?

If there is no leak? So how does the coolant level decreases as time passes? Does it get pressurized so it's level decreases? Or what happens? Since it keeps circulating to the engine and coming back ...
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1answer
251 views

Maruti Suzuki Swift Check Engine Light On And Engine Coolant Temperature Needle stay at 'C'

My Swift VXI has developed a condition. I have started to see the check-engine light on and the Engine Coolant Temperature Needle stays at 'C' after starting the engine. Engine gives a growling sound. ...
5
votes
1answer
2k views

Should overflow tank be filled when replacing coolant?

I have recently fully rebuilt my engine, minus the block and pistons. All the gaskets were replaced, valves lapped, valve lashes tuned etc. I did it because I had an overheating problem and a head ...
0
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2answers
96 views

Not using antifreeze in warm climates [duplicate]

I am just curious if antifreeze has any purpose in climates where freezing temperatures are guaranteed not to happen. Can 100% distilled water be used just as effectively to cool the engine just like ...
8
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3answers
1k views

How to dispose of engine coolant?

This question is pretty straight forward... How to properly dispose of engine coolant? Should it be taken to a treatment facility like used engine oil or is it safe to pour down the drain?
2
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2answers
274 views

The coolant is boiling when I shut off engine

I have a 2000 Chrysler 300m. A few days ago out of the blue my car cut off on its own and I was unable to start it for a few hours. I left it sit in the grocery store parking lot. Went back 3 hours ...
8
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2answers
4k views

How can you tell the difference between oil or transmission fluid in the antifreeze?

I am in the process of repairing my 1997 Toyota 4-runner with a v-6 engine. I have only had the vehicle for a couple of days. I was doing a routine maintenance check on all the fluids. What I found ...
3
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1answer
143 views

What is the 2000 civic SIR coolant temperature sensor thread size?

I'm installing an Auto Meter water temp gauge and didn't receive an adapter with it. Anyone know the thread size of the stock coolant temp sender on a B16A2 engine? (Single wire)... I was going to do ...
3
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1answer
168 views

Honda Accord 1997 - Steam coming from small part of radiator, leaking coolant

After working fine all day, this afternoon I noticed my engine had heated up so hot the needle was above the red. I pulled over and there was steam coming from a small space on the radiator and it ...
0
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3answers
77 views

Do I have battery or engine problems?

Yesterday, I used my car to drive literally 2mins. Away from my dorm building to get to my class building and back because of bad weather. 30+mins. Later I come back outside and use my remote to ...
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1answer
43 views

oil in my radiator

I have a 95 f150. pretty much everything is original on it. I now have oil in my radiator but. looks like thick poo when I took the cap off. but when I checked my oil other than being a quart low the ...