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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15 views

Oil present in coolant overflow, but no signs of coolant in oil

1995 Saturn SL has oil in the coolant overflow but no signs of coolant in oil. What could be causing this problem? Is it worth fixing?
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4answers
80k 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
66 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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0answers
12 views

Coolant leak - 4g63 sohc 2.0L non turbo

Recently I was experiencing coolant leaks in between the engine block and the wheel on the passenger side. This only occurs after the car has been driven aggressively and once the car slightly ...
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0answers
24 views

radiator stop leak

I woke to find antifreeze all over the driveway. My reservoir was empty. I took it to the radiator shop and they said I had to leaks. Then I remembered I had the warranty so I took it to the ...
2
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1answer
12 views

1994 LT1 350 in a Caprice wagon. Oil getting pumped into the coolant and flowing past the coolant reservoir cap

The engine runs well and the transmission shifts well. The only indication was the oil gauge dropping at a stop light. I immediately put 3 quarts in. There was nothing visible at this time. When I ...
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5answers
65k views

Oil in the radiator, but no coolant in the oil

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 ...
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8answers
56k 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. ...
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1answer
193 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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1answer
43 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 ...
2
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1answer
33 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
45 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
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1answer
70 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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2answers
58 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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3answers
82 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?
4
votes
1answer
67 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
46 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 ...
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vote
1answer
183 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
57 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 ...
2
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1answer
66 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 ...
3
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1answer
110 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
761 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 ...
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4answers
8k 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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1answer
5k views

Difference between water pump and water outlet housing

I recently took my car into the shop because I was leaking coolant. (I thought it was tranny fluid. See my other question from a while ago to see how bad I suck at fixing cars :) I ended up putting ...
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1answer
108 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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2answers
60 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 ...
11
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5answers
15k views

2000 VW Golf heater won't blow hot air

My 2000 2.0L Golf GLS won't blow hot air at operating temperature, the air is only lukewarm at best. This started a few months ago inexplicably. The car isn't overheating or underheating, it reaches ...
5
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2answers
21k 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...
13
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7answers
54k 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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0answers
72 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 ...
2
votes
2answers
4k 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 ...
5
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2answers
1k views

Chronic ignition problems with 1996 Suburban, replacing distributor cap makes it go away

I'm trying to diagnose an ongoing ignition problem with a 1996 Chevy Suburban. Sometimes it won't start, and the previous owner said this happens regularly, and every time the problem occurred, ...
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1answer
136 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
78 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
317 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 ...
2
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0answers
19 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
224 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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2answers
87 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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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 ...
4
votes
3answers
16k 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 ...
3
votes
3answers
629 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 ...
2
votes
1answer
65 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, ...
2
votes
1answer
412 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 ...
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votes
1answer
88 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 ...
1
vote
1answer
50 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 ...
2
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2answers
353 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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0answers
85 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
468 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 ...
3
votes
1answer
6k views

How do I find a vacuum leak? I'd highly prefer not to use a carb cleaner spray

The car is a 1998 Oldsmobile Intrigue with 3.8L V6 engine (3800 Series). I've been doing my research and due diligence, but please understand I'm very inexperienced with automobiles. I went to ...
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3answers
60 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 ...