A water-based fluid used to remove heat from the engine. Also see cooling-system for related components such as the radiator and water-pump.

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11 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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1answer
37 views

added too much oil [closed]

I added too much oil to my 97 civic lx, drove it about 30 miles. It started to overheat and antifreeze started to leak from somewhere. I drained the excess oil, which looked brown, and started it and ...
2
votes
1answer
34 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 ...
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1answer
47 views

Engine's Normal Operating Temperature

I read in the Motor Oil University article on Bob the Oil Guy's websites that: The automotive designers usually call for their engines to run at 212°F ( 100°C ) oil and water temperature with an ...
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0answers
31 views

Renault/Dacia Logan 2014+ engine temperature indicator?

the Renault/Dacia Logan 2014 and above have indicators like this: As you can see, the dial at the right has the total mileage and the fuel indicator only. I'm wondering if there is an indicator for ...
5
votes
1answer
50 views

2003 Toyota Rav4 ECT Too Low for Readiness Monitor Drive Pattern

I recently failed an emissions test because my CAT and EVAP readiness monitors were "Not Ready" following a reset check engine light a few weeks back, which told me that the engine coolant wasn't ...
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3answers
68 views

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

My 2012 Honda civic with 19,000 miles has a blue temp light on dash and it seems to be running fine?
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1answer
81 views

how to temporarily fix a gasket leak?

My thermostat gasket is leaking on my 00 Ford ka. Is there I sealant I can put around it as a temporary fix for a week or two before I can get it fixed?
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1answer
47 views

03 Ford Escape V6 Oil/Coolant/check fuel cap lights

I just had my oil changed and had coolant put into my car a few days before Christmas. Also, bought a new fuel cap the same day. All of these lights are still on and I have no idea how to make them go ...
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0answers
60 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 ...
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2answers
52 views

Overfilled my Insight 2010 coolant reserve tank. How can lower the fluid level back without a pump?

I noticed my coolant level was down to the min line on the reserve tank. So I decided to raise the level up between the two lines. I got the proper coolant for the car and started filling. I did not ...
2
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1answer
35 views

2002 Mercury Sable with wrong coolant in it

My wife's 2002 Mercury Sable we purchased a year ago has red coolant in it. I found the owner's manual online and it recommends Ford Green or Ford Yellow. Will this coolant damage her vehicle? Can it ...
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1answer
95 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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1answer
115 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 ...
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2answers
66 views

Oil in coolent on my volkswagen Touareg

The coolant light came on so I took it to a mechanic he flushed it and put knew coolant some special g-12 coolant but the light came on again so I took a look at it and found oil in it . So I looked ...
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2answers
55 views

What is this (cooling-system related) part?

A while back I stopped my 2000 Ford Ranger (V6 4WD) and all of a sudden there was white smoke pouring out from under the hood, indicating that something was leaking radiator fluid. When I opened the ...
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2answers
205 views

What are the reasons to mix oil & coolant?

Frontal impact vehicle is there fan motor touches the oil cooler,oil cooler slight impact is there, in coolant tank oil and coolant mixed, what are the reasons to mix the coolant and oil in this ...
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0answers
18 views

2001 Pontiac Grand Am - Oil in coolant

I just bought my car from a owner I noticed there was oil or what looks like oil in the coolant there is no coolant in oil and car doesn't over heat. It's a 2001 Pontiac Grand Am with 230,000 miles ...
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1answer
148 views

My radiator fan keeps on right after shutting off the car (Hyundai Accent 2002 GL 1.6)

My car radiator fan keeps on working right after shutting down my car, which is strange and never happened before. I suspected the temperature sensor, but through the OBD II kit, I am able to read ...
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0answers
12 views

Oil in coolant reservoir [duplicate]

I have a '99 olds bravada, noticed it leaking green coolant so when I looked in reservoir I looked like oil floating at the top. Why and how did oil get into the coolant reservoir? And what might it ...
2
votes
1answer
340 views

What causes mud in my radiator?

Ive changed my oil about one month ago but just recently my check oil light has started coming on and I started losing my heat. I thought I might just have low antifreeze but when I opened my radiator ...
2
votes
1answer
62 views

Coolant overflows into overflow when accelerating, but completely empties when car cools

My VW Polo's coolant overflows out of the expansion tank. It's like there is too much pressure, causing the coolant to boil out of the tank, yet the temperature is normal. The fan always kicks in, ...
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1answer
79 views

Motor Oil in Coolant Reserve [duplicate]

2004 Mercedes E500 - Yes, I am sure of it. In a moment of stupidity, I added about 8oz of motor oil to the coolant reserve. I have heard nothing will happen and I've also heard it can mess up the ...
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1answer
164 views

Reason for oil like substance in coolant reservoir and under radiator cap?

I have a 96 Ford Ranger 3.0. There is an oil like substance in the coolant reservoir and under radiator cap. Oil is clean with no loss. Transmission is idling fine. No overheating of cooling system. ...
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1answer
49 views

Loss of coolant from under car

I just replaced top and bottom radiator hoses and car has new water pump. It's an '86 mercury grand marquis. Once I replaced everything and filled the radiator with 50/50, I cranked the car up. Soon ...
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votes
2answers
312 views

Can I use an intercooler as a charge cooler radiator

I'm looking at creating an advanced charger cooler setup for my car, can I use an intercooler as a charge cooler radiator? Or do radiators need some special coating on the inside of them? It's a ...
0
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1answer
165 views

possibility of oil entry into coolant tank of figo

What are the possibilities of oil entering into coolant tank ? how to know it withoout seeing tank ? what need to be checked ? what precautions to be taken not reoccur the same trouble kishore
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0answers
81 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 ...
5
votes
3answers
366 views

Why would a water pump be run off of the timing belt?

I drive a 1999 Chrysler 300M, V6 3.5L engine. I am about to start a water pump replacement repair. I've discovered that the water pump is driven off of the timing belt, rather than either of the two ...
2
votes
2answers
3k views

How long does coolant last in storage?

I recently needed to top-off the coolant on my car, but only used a part of the gallon-sized 100% antifreeze container that it came in - how long is it worth keeping the rest in my garage for future ...
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vote
2answers
82 views

Oil in coolant, Pontiac Grand Am 99

I have a 99 Pontiac Grand Am which has done 160,000 km. Recently, I found oil in my coolant. Will this damage my car? What could be the reason behind this?
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1answer
59 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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3answers
56 views

Drove up a curb in my '94 525i bmw and took a chunk out of the sidewalk

Immediately after going up the curb i put the car into reverse, and then park where i then turned the engine off as quickly as possible. Four of the fan's blade broke off, front right blinker popped ...
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3answers
497 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
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3answers
495 views

Coolant spills out of the overflow tank at high pressure

My '98 Subaru Forester spills all its coolant with very high pressure and overheats. I changed the radiator cap and did a flush, but still have the same problem. I added stop leak, but that did ...
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0answers
173 views

Car wouldn't start apparently due to weak battery, but did start after I added coolant

I know there is a leak somewhere in the cooling system of my 1996 mazda 626. It is an old car, and I just keep adding coolant every two days. This morning, I was not able to start the car. It looked ...
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0answers
59 views

Igniting Engine after removing ECT(Engine Coolant Temperature) sensor

I read a bit about ECT (Engine Coolant Temp) sensor and learned it can be of Negative and Positive nature. But what i want to know is, if i remove the ECT sensor, i'll be able to ignite the car or ...
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1answer
57 views

Where does the coolant go?

I filled up the coolant a few months ago and today I found the coolant level is near MIN. Is it normal that coolant "evaporates" over time? Or does it mean that it is leaking somewhere?
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votes
4answers
1k 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 ...
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2answers
90 views

2001 Ford F150 running hot

I changed my coolant hoses on my 2001 Ford F150 today. I let it idle for about 15 minutes and then took it for a test drive. It began to run hot during the test drive. What could cause this?
3
votes
1answer
714 views

Mechanic Troubles And A Small Watery Oil Leak

My car is a 2005 BMW 525i E60 with about 180,000km on the clock. It has been well looked after and serviced. I don't get dealer services, but go to a mechanic who has always been good and uses the ...
2
votes
1answer
667 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 ...
2
votes
1answer
169 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 ...
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2answers
123 views

Low coolant in freezing weather

I have been running straight water as coolant in my truck. As we have very few days in the single digits, I have had no trouble. However, today dropped to 7 degrees. I allowed my truck to warm up ...
4
votes
1answer
733 views

Engine coolant gets to very low levels, but doesn't completely empty

2008 Toyota Tundra with a 5.7L V engine I noticed last month that my coolant reservoir was well below the 'low' mark. I filled her up, only to find out last week that it was back to the same spot ...
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2answers
958 views

How much coolant does a 98 Subaru Forester hold?

I'm looking to put an additive in my forester's cooling system, I'm not sure where to find out this information.
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2answers
72 views

where to put my coolant

I have a 325I 2003. I wanted to put coolant in my car and I started putting it in the reservoir. But I wasn't sure if that is where i put it so I stopped. Will it hurt if I put a little in the ...
2
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1answer
306 views

Oil in coolant none in oil

I have a 2003 F150 with a 5.4 engine. It started running rough and I noticed oil in my coolant. I checked the dipstick and it is clean. I was just a little low so I added oil. When I removed the oil ...
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2answers
122 views

Coolant boiling

When I start the engine it was showing me that the coolant level is low. I did buy a mixed antifreeze and put on top of the other. Like in 5 miles when I stopped I did hear a strange noise. I opened ...
3
votes
1answer
49 views

Is coolant testing necessary on modern vehicles?

My father in law continually reminds me to check my antifreeze when it starts getting cold. I get the squeeze tester out and it always shows everything is fine. We drive cars that are always less than ...