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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14
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6answers
713 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
votes
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
votes
1answer
48 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
22 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 ...
6
votes
6answers
20k 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
1answer
232 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
votes
1answer
32 views

how much coolant required in chevrolet spark

Which coolant I can use in my Chevrolet spark and how much coolant and water required
7
votes
2answers
42 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 ...
6
votes
1answer
74 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 ...
3
votes
0answers
26 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
905 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
40k 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
votes
0answers
31 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
votes
0answers
82 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 ...
1
vote
1answer
503 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
5answers
96 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
67 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
votes
1answer
34 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
69 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? ...
1
vote
1answer
39 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
46 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
845 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 ...
6
votes
2answers
57 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 ...
1
vote
1answer
31 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
42 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 ...
4
votes
2answers
64 views

Oil in my coolant & no longer in my oil pan?

I have a 96 mustang GT with a 4.6 ltr V8, the car has not been severely overheated, but did overheat once a few months prior to this issue when the heater hose fitting popped out of the Carbon Fiber ...
3
votes
2answers
107 views

Effects of anti-freeze concentration on engine temperature

I am curious as to how useful the engine temperature sensor actually is. It tells you the coolants temperature obviously, but I have read that the engine actually operates hotter than the coolant. For ...
3
votes
1answer
44 views

What could be causing loss of coolant - crystals forming around expansion chamber

Vehicle is <12 months old Merc S350 diesel. Suffering constant loss of coolant. Clear signs of 'pink' crystals in area of water filler and associated pipe work. It is as if the coolant is being ...
13
votes
2answers
165 views

How do I troubleshoot the source of oil in my coolant?

I would like to know the step by step troubleshooting procedure for discovering the source of oil appearing in coolant. There are several different points of failure that can be the root cause for ...
4
votes
2answers
1k views

Second burst ancillary hose on Z20LET engine

This morning was the second time the same ancillary coolant hose burst in my car. It's a 2005 model Opel/Vauxhall Astra turbo coupe (engine is Z20LET). Prior to this, I have had many problems with ...
5
votes
1answer
61 views

Min/max fill for coolant reserve/overflow tank in abscence of markings

I have a 2001 Honda Prelude SH. I am looking at the coolant reserve tank. There are no min / max fill lines visible, although the manual says there should be. I am just re-adding coolant after fixing ...
5
votes
4answers
13k views

Air trapped inside radiator after adding coolant

It has now happened twice to me that after adding coolant to the radiator, when I turn the car on the RPM's will bounce up and down and the engine is reving (between 1k and 1.5k RPM's). Normal idle is ...
5
votes
2answers
37 views

1997 1.8t Audi Quattro - using coolant

I have an issue with my 97 1.8T Quattro using coolant. I've checked for external leaks and can't find any. The engine oil is still clean. Has anybody had this issue before? Is it possible for it ...
2
votes
1answer
81 views

Temperature of coolant before and after radiator [closed]

I am doing an analysis project on radiators so I need to know the input temperature. At what average temperature does the coolant enter radiator (not thermostat opening temperature) during normal ...
4
votes
1answer
48 views

What is commonly used nanofluid coolant for automobile radiator

What is commonly used nanofluid coolant for automobile radiator ? And any specific reason for that coolant ?
3
votes
1answer
32 views

2003 Buick Rendezvous overheating without steam, coolant overflow at normal temperature [closed]

My car overheats to the max, the heater will not heat even in full blast. When the car overheats there is no steam or boiling coolant. The radiator has antifreeze and the reservoir is overflowing. I ...
4
votes
1answer
29 views

1995 Pontiac Grand Am Over-Heating and Cold air from heater, why?

My grand am is over heating while idling, blowing cold air out from heater and bubbling in coolant resevoir. Replaced thermostat and water pump and bled the valves to get air out and still same thing. ...
11
votes
5answers
122k views

Why would there be transmission fluid in the water overflow reservoir?

The car is a '98 Buick Lesabre with the 3800 engine and about 170k miles. It appears as though some oil was in the radiator, but I haven't seen any signs of coolant in the oil. The water pump recently ...
8
votes
4answers
30k views

My car has the wrong coolant in it. Now what?

Hello I realized today after beating my head about my car's overheating problems that I have the wrong coolant in it. About a year ago, my car ran dry. At the bottom of the expansion tank was an ...
9
votes
2answers
60 views

Losing coolant fast after just fixing radiator

I have just got my coolant tank and radiator replaced after a leak in the radiator and a cracked coolant tank. I filled the coolant tank last month and now it is nearly empty. I am just wondering if ...
3
votes
1answer
50 views

Engine Temperature from OBD data

Engine Coolant temperature is obtained from OBD. But there is no PID to get engine temperature. Obviously, they are related, rather proportional I guess. But can there be a case where my engine is ...
0
votes
1answer
50 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 ...
8
votes
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
votes
1answer
113 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
votes
1answer
117 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
votes
3answers
410 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 ...
1
vote
0answers
73 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 ...
2
votes
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
votes
1answer
121 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 ...
3
votes
3answers
5k 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?