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Questions tagged [coolant]

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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reduce coolant consumption

I am confident that my COOLANT consumption is normal but I would like to reduce it. It seems to me that coolant overflow systems are less than ideal. The air space above the coolant in the bottle must ...
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How often should we change Coolant Temperature Sensor, and is it life time long?

I drive Nissan Sunny 2010 N16, it has 225000 KM, I am experiencing extra fuel consumption, for 45 Ltr it makes only 350 KM in average (high way/city) driving, one week back I changed the oxygen sensor ...
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Using lots of coolant, suspect head gasket

1998 Subaru Forrester, 4 cyl. I don't remember the exact specs of the engine. It's using what seems to be a lot of coolant -- probably 2 qts in a 30 day time span. There's no leak (I've left ...
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Prestone yellow bottle coolant vs old green coolant

98 civic ex has always had “green” coolant. Now not sure if that’s original used stuff or what. However I noticed you can’t really find regular old green coolant that uses silicates and had to be ...
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Can you have coolant in the resevoir tank while the radiator is low on coolant?

Suppose my coolant reservoir has gone low and but is still showing a little coolant. I was under the impression that the rest of the system is still full (even when leaking) since if the radiator was ...
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Was I right to drive with leaking radiator given these assumptions?

I noticed coolant was leaking and drived home slowly. By the time I got home I noticed there was no more leaking so could be all coolant gone. It seems to be from the radiator however I could be wrong....
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Replaced heater core inlet tub because of leak, now car overheats

Just replaced my heater core inlet tube on a 98 mustang base. My pressure test went fine and everything, the leak is gone but now the car overheats within 2 minutes of driving. I had to conform a ...
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How to prevent nut falling off ring wrench?

I have minimal space to work with on a BMW X3. I am changing the coolant. I am following these instructions: https://www.newtis.info/tisv2/a/en/e83-x3-2.0d-sav/repair-manuals/17-cooling/17-00-...
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Does the coolant gauge go up or down when there is no coolant?

My car nearly overheated where temp gauge just touched max temp. Does this mean engine damage? I thought that maybe the thermostat broke so i shut it down and drove later, but it turns out the ...
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The gas pedal stops responding after a problem with car heat

So the other day I noticed the car was getting hot and I knew it the coolant needed to be refilled. But the coolant cap was stuck so I thought I would just finish my errands and then take it to the ...
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Car suddenly stops accelerating and overheat indicator comes on

Vehicle: Skoda Fabia TDI 1.2L diesel While driving back home, the car suddenly stopped accelerating and the RPM was stuck at 1000, even when I applied more gas. Immediately after, the overheat ...
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block test positive but leak down doesn't find any issue

My Jeep has been losing coolant before and after replacing a leaky radiator. block test proved positive for combustion gases but the dealer doesn't find an issue with leak down test. there is not ...
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Coolant fluid being consumed up fast (1.5 liters in just two to three days)

My friend owns a VW Golf Mk4 1.6 SR year 1998. Recently he is having issues with the coolant fluid being consumed up really fast, approximately 1.5 liters in just two to three days. The first thing ...
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Car running hot - bottom radiator hose cold

Have a 2009 Subaru Forester XT 5 speed manual. The cars temps are running high. 98c while driving at about 100km/h. Temps will drop to 80c very quickly if the car gets into higher rpms. Ie 4000rpm. ...
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Left car running, coolant gone, engine overheated

Car: Hyundai Sonata Hybrid Yesterday, before going into work I forgot to shut my car off. That was at 9am. Around 1pm, I received and email that my car was running so I went out to shut it off. Once ...
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chevy trail blazer 2005

I have just been putting water int he radiator (there is a leak) and ignoring the dex cool - so you put water in the radiator in the front of the engine and then put coolant in the other one (back ...
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2000 Oldsmobile Intrigue disconnected coolant hose

We got this car really cheap from a friend since it leaks coolant (it runs out in about ten minutes of driving). My wife noticed the other day this hose that is not connected to anything (shown below) ...
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Should I flush cooling system before or after water pump replacement

I recently replaced the water pump on my car as part of a restoration project. The old pump is still good and now that I want to conduct a cooling system flush I understand that I should reinstall ...
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Would pressure testing indicate leaks from the coolant hoses?

If you do a pressure check, would bad coolant / radiator hoses cause the test to fail? I have had 2 mechanics trying to figure out why I am losing cooling fluid. Pressure test didn't turn out any ...
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469 views

Topping up Coolant bottle with Distilled water only or pre-diluted coolant?

I am using pre-diluted (50:50) coolant in my car. I have observed that with passage of time and use (around 4 month), coolant quantity in reservoir bottle decreases to middle of MIN and MAX. I have a ...
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When doing an “Engine Coolant” and “Inverter Coolant” change. Do you use the same coolant type for both?

Well I got my 2011 Toyota Prius oil changed and the dealer wants me to pay $500+ to get both the Inverter and Engine coolant changed. However I feel I'm up to the task for a fraction of the price. ...
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Mixing antifreeze and coolant

My son bought coolant instead of antifreeze and put it in his vehicle it was the same color, will this cause is problem?
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What are some effects of higher than usual cooling system pressure?

This is a follow on to this question where I asked how A/C could be causing coolant loss. The answer was that using the A/C can cause higher than usual cooling system pressure, which could result in ...
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How can an A/C system consume coolant when in use?

I drive a 2007 Subaru Outback. Recently, I've noticed that when I use the air conditioning, my coolant level drops ever so slightly. The rate of loss seems to be related to the amount of time the A/C ...
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Water instead of engine coolant? [duplicate]

Currently own a Vauxall Corsa (diesel), that is seemingly leaking engine coolant. Having bought over 3 bottles of coolant this week, and having to fill it up constantly, I will be taking it into a ...
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How often and how thorough should a coolant flush be?

I have a 2005 Mazda Bounty UTE. How often should it have a coolant flush? I have since seen videos which suggests a flush should be a number of cycles of empty, new water, empty, new water, empty etc ...
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225 views

Why did changing my coolant break my water pump

Many years ago I changed the coolant in my 1994 Mazda Lantis. I had no idea what I was doing, and the result was my water pump broke and started leaking. The mechanic replaced it and all was good. ...
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Hi I’ve got a 2013 insignia 2.0CDTI coolant problems

Coolant warning message keeps coming up on dash checked level ok replaced sensor but message keeps coming up help
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351 views

Coolant leak passenger side on floor

2009 Journey has coolant on floor of garage on passenger side. Car doesn’t overheat but had to add coolant to the reservoir. Mechanic can’t find leak.
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Will driving with less coolant cause any problems?

Let's say the capacity of the cooling system is 7 liters. Lets say you have 1 liter in there. Besides the fact that if you have a leak or it evaporates you will have less time, is there anything ...
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1k views

Why do you people run distilled water on cooling system and flush it, is it neccesary?

I'm trying to change coolant on my car. I saw a video of my car where they drained the existing coolant, added and ran distilled water, drained it and then finally added coolant. Why are they doing ...
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Light White water vapour like smoke from exhaust continues throughout the journey

I have a Make:Vauxhall/Opel Model:Corsa EngineSize: 1.4 Registered in year: 2012 FuelType = Petrol A day before I noticed a light white smoke from the rear view mirrors and I was already an hour ...
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Disconnected sensor harness and car is now leaking coolant. Related?

A mechanic replaced BMW X3 2008 cracked coolant reservoir. Car was running fine for several months. Recently "low coolant level" light came back on. I refilled it with more coolant. However, now it ...
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Kia sedona coolant reservoir

My wife's Kia Sedona has been guzzling coolant lately. We cant find a leak and there's no puddles on the ground we're stumped. Everyone says there's a leak but no one can find it. Any ideas to ...
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355 views

Car turned off in stop light, battery light, oil, and brake light came on?

The situation all started when my nissan sentra 2007 leaked all the coolant from a pipe down below. I couldnt find the pipe in junkyard or in any autorepair shop so i was advised to just run another ...
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2000 Ford Ranger 3.0L temp gauge cold

Originally had bad head gaskets, replaced them and all was well. Riding home from work a month later and gauge started dropping to cold, got home and noticed coolant leak, the water level was so low ...
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Flat / collapsed upper radiator hose!

I have changed my radiator cap couple of months ago with an original OEM one. The older one had a broken sealant which caused engine over heating. Now, i have no heating problems but after the engine ...
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Is it possible to splice in a 2nd temperature gauge?

This is a 2006 Mazda6 6 cylinder. I want to install my Autometer temp gauge. Can I tie it into an existing wire or do I need to put in a second sensor? How do I tie it in?
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Why does my Toyota Corolla 1500cc with 16 valves lose a half litre of water in the radiator after 100 km run?

I have recently changed an engine and it's quite new made in Japan. I have also changed the water tank of the radiator. Hence no leak and nothing at all but after running it for 100km it reduces about ...
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Can refreshing the cooling system save this motor?

I bought my 2011 Dodge Avenger less than a year ago and after 6 months started having issues with running cool. I took it to the dealer and ended up needing a new head and head gasket. After the ...
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2k views

How often to put water in coolant

Is it ok to put water in coolant? I live in a tropical country in Burma and i wonder if its ok to put water in a coolant? Also my coolant water fluid does drain every week. Is my coolant functioning ...
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Can a long road trip cause a loss of engine coolant?

I went on a long road trip not long ago and just recently my car told me to check the coolant level. I checked the level and it was low, however I can't find any signs of a leak. Could the level be ...
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323 views

Why do we need coolant in throttle valve body inlet in Opel Astra H?

Opel Astra H has an electric driven throttle valve. As I know, coolant in throttle valve body would control bimetal plate responsible for warming up. Why can't it control warm up process based on ...
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386 views

White sludge in coolant tank, overheating and bubbling over

I have an 04 VW Passat. I know it needs a new pcv valve. Could that cause the engine overheating and boiling over with white sludge? What could be causing this problem?
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436 views

Coolant water keeps boiling off every day

A mechanic worked on the compressor and he flushed out the coolant system and only filled it up with water. Afterwards, the coolant water keep drying up and I had to top it up with 2 liters of water ...
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50/50 Coolant mixing

I just replaced my radiator today and decided to refill it with coolant concentrate and mix in water myself. Instead of mixing the stuff properly before hand, I poured in 1/2 gal. of water directly ...
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Sudden high coolant temperature

After installing a new coolant regulator and burping a system sudden high temperature occures. Following picture show 95 degree at 92 degree of oil temperature but coolant temperature can reach even ...
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Is there a way to know if you were driving your vehicle without any coolant for days or if it was just low?

I'm freaking out right now. The heat went out in our van over the weekend and we just thought it was the temperature gauge. Had to wait until husband's day off, today, to take it in and found out it ...
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Coolant leak on Holden Astra

I had a new drive belt fitted about one month ago max. Now suddenly my Astra is leaking coolant severely and the new drive belt is also damaged and this is where the coolant is leaking! Is this an ...
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water boils in reserve tank

i use a dodge caliber and I have noticed the water boils in the reserve tank when the engine is hot and also when I park it overnight ,I have to refill the reserve tank the next morning because it is ...