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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2answers
28 views

What could cause the engine temperature gauge and AC to fail simultaneously?

On Wednesday I noticed my car's temp gauge reading at bottom while driving down the highway. The air conditioner was also non-functional. Each of these components were working fine the day before. The ...
6
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2answers
28k views

Accidentally poured engine oil into the coolant reservoir

My 1990 Mazda 626 leaks oil like a sieve, so I regularly top up the oil. In a moment of stupidity, I opened my radiator cap instead of my oil cap while topping up my engine oil, and poured about 50-...
13
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5answers
172k 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 ...
3
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2answers
30 views

Coolant has oil residue

What is the probable cause of engine oil in the coolant? There are no performance issues but when I checked the coolant level, I noticed oil residue.
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1answer
44 views

Mixing Coolants

I have a Volkswagen Jetta 2008 S, and I recently noticed that the coolant level is near minimum. My user guide told me to get the purple G12 coolant and that was what the auto parts store made me buy. ...
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0answers
18 views
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2answers
43 views

Boiling Antifreeze

I have a 1998 Pontiac Grand Prix and I have noticed that when I drive it for about 15 to 20 minutes and then park it and turn it off my antifreeze is bubbling. My thermostat does not say it is ...
3
votes
1answer
27 views

1999 s10 radiator?, running, coolant system problems

Ok, we'll start from the beginning. I saw smoke coming out from under the hood so I opened the hood. There was coolant passing out a very small pen hole in the top right corner of my radiator. I ...
3
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1answer
46 views

1999 Ford Ranger - Removing head gasket and found mystery coolant line (?) coming out of firewall. What is this?

I bought this truck broken and I don't know any of its history other than it has a blown head gasket. I've tried to be diligent about labeling things and it's possible I labeled this but the tape ...
3
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1answer
26 views

1996 Mercury Sable overheating while idling

My car is overheating while idling at light. I have been driving it without a thermostat for about 6 months. I have had the water pump replaced and the reservoir. I have also replaced the reservoir ...
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6answers
1k views

Is it Safe to Drive With Low Engine Coolant?

I have a 2001 Chevy Malibu and have replaced the engine coolant in it twice in the last six months after the low coolant warning light came on, and the light has recently come on again. The climate ...
2
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1answer
450 views

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

I noticed my radiator was dry after three weeks of driving my car after i got it back from the dealer, they replaced my water pump. I just discovered this tonight after my check engine light came on. ...
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8answers
150k views

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

I grew up flushing the coolant twice yearly. In the Spring, you drain the antifreeze and fill with straight water for the summer. In the Fall, you drain the water and put in a 50/50 antifreeze/water ...
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2answers
609 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 ...
3
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1answer
231 views

Coolant pressure issue

I am in need of some assistance. I am having a coolant pressure on my 1.8 16v clio. (Renault), coolant, cooling-system, overheating (car maintenance) In that when left to idle and engine gets up to ...
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0answers
22 views

Losing Coolant in Honda Civic

Hi my 2005 Honda Civic has recently started giving me issues. It overheats at times mostly when i'm sitting at a red light. I have tried replacing the thermostat and fan switch which worked for a day ....
6
votes
6answers
26k views

What's making my coolant overflow?

I got home to find a trail of coolant down the driveway and puddles forming under the car (1991 Toyota MR2 - 5SFE). Concerned that I blew a hose, I checked them all. Nothing. Finally decided to see ...
3
votes
2answers
66 views

My 2004 PT Cruiser is overheating

I have tried everything got a new radiator, thermostat, put blocked seal permanent head gasket fix. So I started my car and let it run for 15 minutes, after that I see no antifreeze in the reservoir.....
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1answer
26 views

cooling system vw

i have a golf 4 gti engine 2.0 for the year 2002,the problem is when i pour water in the container it does not hold water,instead it leaks i can't see where the water is leaking,all the pipes ...
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1answer
42 views

Engine smoking with normal temperature gauge

I had a fair bit of work done to my 1999 Subaru Legacy last week with the main fix/problem being a timing belt replacement. Additionally they replaced oil seals, 2 hose clamps, the radiator cap, the ...
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0answers
26 views

Why is there no pressure in my 06 Chevy Impala…?

Boy, what a day I had. Roads were real slippery today in Texas and I skidded and lost control. Next thing you know, I'm in a ditch full of grass, dirt and rocks. I'm still amazed at how little damage ...
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1answer
62 views

Coolant leak after AC recharge

Went to recharge my AC system on a 2000 Acura TL, the pressure gauge showed the pressure being on the line of "empty" and "filled", put some refrigerant in and the gauge didn't move at all put more in ...
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3answers
341 views

50/50 Coolant Dilution after distilled water flush?

I have a new (to me) car that it appears hasn't had a coolant fluid change ever, now with 120k miles. It is an 04 Corolla. I am planning on flushing the system with distilled water a few times. But ...
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1answer
43 views

My car wouldn't start

I drive a BMW 525i, recently hasn't been starting up, I drove to see my friends once and was fine, when I left them I try to start and would not dare to start, so checked on the radiator, the was no ...
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1answer
83 views

Leaking water under bottom left of the engine block

I have a 1999 ford explorer Eddie Bauer SOHC 4.0L and it is pouring water from a hole in the engine. I'm not sure where or what goes in the but it is running out fast.
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1answer
61 views

Is there a way to guage when a 2015 Honda Civic reaches its normal coolant operating temperature?

Just bought a 2015 Honda Civic and then noticed that the coolant temperature gauge is not in the instrument panel. There are only two instrument cluster panel idiot lights dedicated to coolant over or ...
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1answer
181 views

Coolant pouring out from under 1998 GMC Yukon as fast as i put in

I filled my radiator with water and it is pouring right back out of the rear of engine as fast as i fill. It seems to be near or behind the transmission. https://youtu.be/27qV-ufMsQc How can I find ...
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4answers
1k views

Clear water in coolant reservoir

Over the weekend I took my 2000 Toyota 4Runner to a local shop to get the oil changed. While there they told me I needed to flush the coolant, pulling clear water out of the coolant reservoir. They ...
4
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1answer
166 views

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

I have a Triton v10 engine in my vehicle I have oil in my coolant but no coolant in the oil. What could be the problem?
3
votes
1answer
50 views

Temperature gauge between half and 3 quarters?

I have a '98 Oldsmobile Intrigue and after about 20 minutes of driving the temperature gauge is between one half and 3 quarters. I was wondering if is this a problem? The coolant is at the right level,...
3
votes
1answer
242 views

Mercedes OM636: Can I Resolder Wire to Coolant Temperature Sensor?

The wire contact connected to the Coolant Temperature Sensor of my Mercedes OM636 (Boat engine same as Mercedes 170D, 180D) was corroded and got accidentally snapped off. Can I just solder this back ...
3
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1answer
60 views

how much coolant required in chevrolet spark

Which coolant I can use in my Chevrolet spark and how much coolant and water required
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2answers
49 views

How to flush engine coolant system after oil intrusion

My 02 Buick LeSabre has oil coming from the radiator into the coolant reservoir. Just recently I had a new motor put in to fix the issue. What would be the best/proper way to flush the radiator? It ...
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1answer
91 views

Why do modern vehicles omit a temperature gauge?

I'm more specifically interested in performance vehicles. My current car has gauges for coolant temperature, oil temperature and oil pressure. The coolant temperature gauge is there so you can tell ...
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0answers
32 views

2006 Mercedes E350 4matic , v6 engine

Drove kids to school , stop to get ha and made it home then was about to leave back out and the car started to drive sluggish as if it didn't want to do . I proceeded to pull over at a gas station and ...
5
votes
1answer
2k views

Is it necessary to run the engine after adding radiator coolant or only when draining?

I recently did a timing belt/water pump change on my own. When I changed the water pump i drained the coolant, and according to my mechanic, I blew my radiator by not running the engine with the cap ...
8
votes
3answers
54k views

Oil in coolant - how much trouble am I in?

I have oil in my coolant reservoir. Could it just be the head gasket or is it almost certainly the entire engine or might it be something else entirely? Thanks in advance...
5
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0answers
75 views

Mysterious coolant leak HOLDEN ASTRA

Recently I have started to notice that there's coolant (presumably) leaking from the engine. There's no obvious leak when you look at the engine from below right after you have driven it, but it ...
4
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0answers
127 views

Radiator has a leak and the upper hose is clogged, car does not overheat. White smoke from upper hose

My car is a 2003 Buick Century and it has been leaking for the past few months (puddles of coolant under the car). Now the car begins to have white smoke coming from the engine and it has a sweet ...
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1answer
569 views

Dodge Ram 1500 SLT 4.7 Losing Coolant

I have a 2003 Dodge Ram 1500 with a 4.7 magnum, and I have replaced the radiator, thermostat and water pump. I keep having to fill the reservoir every couple of days. Fluid keeps coming out of the ...
4
votes
4answers
104 views

Will my 2002 Mustang make it from California to Iowa?

I have a great 2002 Mustang automatic 6cyl in great condition, but I am a worrier and want some outside opinions. I am the second owner of the vehicle. Have owned it for 1year, 7 months and I get my ...
4
votes
0answers
69 views

Honda Civic 2002 Coolant sprinkles back from Rad cap

I am having issues with this car, so I am reaching out to masses out there who could share some of their wisdom to help me understand the actual issue with this car. It has 262K miles on it. Issue ...
3
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1answer
37 views

my cars coolant dries up atleast less than a half litre after i drive around 400 km. why?

In my car, coolant dries up fast and after i drive around 400 kms, again I have to feel up at least less than a half litre. Why it is? No leakage.
5
votes
1answer
82 views

I have engine oil in my coolant. What might be the reason?

I have purchased a pre-owned car. After the purchase I saw there was engine oil in the coolant reservoir and also the coolant level is going down slightly. Engine is not heating up. What do I do? ...
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vote
1answer
58 views

Hood smoking, coolant leaking. 92 Subaru legacy

My car recently would heat up extremely quickly and begin smoking, the reservoir for coolant was low so I refilled(was accidentally overfilled). That did not help so I refilled the radiator itself ...
5
votes
2answers
66 views

Will an engine overheat if it has no coolant recovery tank?

My wife's Mini has a leak in the coolant recovery tank, and she has been told by the dealer that her car is at risk of overheating without the coolant recovery tank.Frankly, I don't believe it. Cars ...
2
votes
1answer
1k views

oily sludge in coolant reservoir

I have Chev Cruze 2010. There was a heatup and I noticed thick creamy sludge overflowing from the coolant reservoir lid. Mechanic diagnosed issue with engine oil coolant and repaired it. Later he also ...
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2answers
76 views

Coolant in engine… Head gasket going

I have an 05 Equinox, and while idling it sometimes overheats. We have to continously add coolant every week. If this was the only problem, I'd fix it, but, there's other issues as well, and combined ...
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1answer
47 views

I have a 1996 Mercedes e320 I constantly have to put coolant in the reservoir coolant levels always low [duplicate]

My Mercedes e320 has 186,000 miles on it. it is a 1996, I just purchased the vehicle so I do not know the history. every 15 or 20 miles or so, engine coolant level light comes on and I have to put ...
3
votes
1answer
72 views

Overflow reservoir bubbles after driving not overheating

My 95 Ford Windstar just had the radiator replaced. After driving there is bubbling in the overflow res. , engine is not overheating and water seems cool to touch in reservoir. I can smell antifreeze ...