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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 the [cooling-system] tag for related components such as the radiator and water-pump.

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Car Radiator Coolant Leak

I have a coolant leak coming from somewhere in this region (circled in red): It's a very small leak as I just need to top it up by about ~100ml monthly? I don't really want to pay and replace it ...
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Coolant leak / engine overheat / cylinder misfire

Make: Honda Model: Civic 1.8L 2007 petrol Miles: 107,000 I have experienced cold air coming from heating system for a while - I probably should have addressed this sooner. Finally when driving ...
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Filling tank "Heavy duty Coolant" or "Coolant Mixture with Water"

A newbie into car world here. I have a 2016 Hyundai i20 1.4L Diesel. I have found various opinions regarding the coolant/antifreeze liquid that we use in the vehicle. Some believe 1:4 mixture of ...
Fayaz's user avatar
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2 answers
47 views

Coolant, filling while draining

2020 F150 3.5L Ecoboost. Can I fill the coolant reservoir while draining coolant? The bottom of the radiator has a drain valve and I'm wondering why I can't set up the new coolant to flow into the ...
DDDD's user avatar
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Opel corsa 1.4t 2016 mixing coolant into oil

My opel corsa 1.4t with B14net engine is mixing coolant into oil as result oil tank fills above max. I have cylinder head checked and is fine,replaced gasket and oil cooler and temperature is fine. It ...
Mthunzi's user avatar
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2 votes
0 answers
136 views

Explain why a new radiator cap fixed my coolant leak

I have a newly acquired 2010 Honda Odyssey. As part of the purchase, the seller replaced the timing belt and water pump. From the moment I acquired the car, it lost coolant continuously. I needed to ...
tubwreck's user avatar
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Oil in coolant but no coolant in oil 2014 Ford Edge 3.5

I just bought a 2014 Ford Edge 3.5L SE with 114,000 miles on it. I noticed oil in the coolant tank. I performed a very thorough coolant flush. Still oil in coolant. No coolant in the oil. I read ...
Johnny Fleischman's user avatar
1 vote
2 answers
100 views

What would be the long-term result of driving without a thermostat?

Would there any damage done to an engine if you run it without a thermostat permanently? Let's assume the vehicle is driven in a climate that is warm and temperatures never drop below freezing.
TheLegendaryCopyCoder's user avatar
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Adding coolant into reservoir it comes out overflow on radiator

I changed water pump 02 gmc sierra 1500 and of course I had to drain the coolant system to do that . As I am adding coolant back into the system through the reservoir it is coming out radiator ...
jeremy dorman's user avatar
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714 views

What's the different between cheap coolant and expensive ones?

I'm living mostly on hotter climate (20-35 Celsius). Does expensive coolant make my engine running cooler? Or perhaps it will last longer than the cheaper one?
reptildarat's user avatar
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2 answers
672 views

What can cause high coolant temp and check engine light

I've got a 2008 Mazda 3i Touring, 5 speed manual, with about 145k miles on it. A few weeks ago, after my wife got home from work, we noticed the coolant temp gauge on the dash was fully at high and ...
mmathis's user avatar
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Does Coolant Actively Circulate Through Overflow Reservoir?

If one adds fresh water or new coolant or some additive to the radiator/coolant overflow reservoir, will it end up actively circulating through the system in a reasonably short amount of time (i.e. ...
AA040371's user avatar
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2 votes
1 answer
2k views

OK to Drive for Short While with Radiator Cleaner in System?

I am going to flush cooling system and replace coolant in my car in near future and was planning on using a radiator cleaner product from Liqui-Moly. The place where I do my DIY auto work like this ...
AA040371's user avatar
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1 answer
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Coolant is decreasing (Sonata 2015)

I am in a weird situation. When I drive my car inside the city then the coolant in the reservoir is decreasing but when I am on highway then it remains same. For example yesterday I drove around 150 ...
Jalil Ahmad's user avatar
2 votes
1 answer
122 views

How do I fully flush a cold following system?

Just joined. I wish to exchange the coolant on my Toyota Yaris as it had never been done in the 10 years I have owned the vehicle. I have bought the recommended, premixed coolant and 2 gallons of ...
Clive Long's user avatar
1 vote
1 answer
105 views

Why am I not supposed to operate the air-conditioning right after changing the coolant?

The coolant change procedure for my 9th generation UK Honda Civic is to start the engine, set the cabin heater to maximum, turn off the engine, drain and refill the coolant, bleed air from a nipple, ...
William's user avatar
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damage done by wrong coolant

Engine takes silicate-free coolant, repair shop has put in 3l of some coolant containing silicates. I have run it for some 300 km in two weeks: first 100 km the way picked it up from the repair shop ...
kellogs's user avatar
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2 votes
1 answer
149 views

Completely draining anitfreeze

Looking to replace it all What I have to work with: degassing tank cap is removable air bleed at the thermostat drain valve at radiator's bottom Putting one hose back after having it taken off took ...
kellogs's user avatar
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1 answer
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Mystery coolant leak that suddenly stopped?

In short: Any ideas why a coolant leak would be sporadic and suddenly not be found during a pressure test? 2020 Jeep Cherokee / 3.2L V6. Had what was almost certainly a coolant leak on Saturday. ...
wowohweewah's user avatar
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22 views

2004 Chrysler Concorde LX Coolant Leak

My had a slow coolant leak in his 2004 Chrysler Concorde LX. The car began to overheat & smoke from under the hood. He waited 1 1/2 hrs and added coolant. After driving 25 minutes he parked & ...
Traci Lindsey Farmer's user avatar
2 votes
0 answers
40 views

1989 mazda 323 hatchback

I have a 1989 Mazda 323 hatchback. Does not get hot. A friend of mine hooked up a new stereo for me but my temperature gauge stopped working. I need to know where to look to plug it back in or change ...
Dawn S's user avatar
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1 answer
74 views

Overheating engine after hard run?

I came across this paragraph in my car manual which states the following: "If the engine has been driven hard for a long period, the engine could overheat when it is switched off. Risk of engine ...
Aden's user avatar
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1 vote
1 answer
478 views

Why is there a MIN and MAX marking on a car coolant bottle?

I've always thought the minimum and maximum mark on the coolant bottle were quite pointless as it doesn't seem to make much of a difference to the function of the vehicle if I overfill a little bit or ...
Aden's user avatar
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3 votes
1 answer
312 views

Coolant Reservoir keeps breaking Skoda Rapid

My car is Skoda Rapid 1.6 litre petrol engine, 2013 model. It has ran about 140000 Kilometres. Recently Smoke started coming out of my coolant reservoir and it was leaking not from the cap but from ...
mSatyam's user avatar
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1 answer
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Astra hatchback is boiling while driven short distance it boiling hot. Have taken out the thermostat but still no solution [closed]

Opel Astra water thank is boiling while driven short distance...taking lot of water in it...Have removed thermostat but still no solution...what might be a problem pls help
sicelo kunene's user avatar
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123 views

Mechanic detected low coolant level in car, says no leaks, could some of it have evaporated slowly over time?

I'm looking to buy a second-hand VW Polo 1.2 TSI, 2015, and with 31K miles on the clock (I'm based in the UK). Car has clean history, never written off and has passed all its MOTs without any ...
Nobilis's user avatar
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1 vote
1 answer
528 views

Car running hot but not overheating

09 3.5L v6 chevy malibu running hot. Radiator is new. Pressure test came back fine, so no leaks. Disappearing coolant that's never visible on the ground. My temp hand will rise just about to H in a ...
Jeff22's user avatar
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1 vote
1 answer
270 views

Is it safe to add OEM Renault green coolant to yellow coolant already present?

I want to fill up the coolant of my Renault Clio III because it's at the minimum level. I've bought a bottle of official Renault GLACEOL RX type D coolant. This new one has a greenish/yellow color but ...
wouter205's user avatar
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Low coolant sensor light doesn't turn on

My '04 Chevy Silverado recently had a coolant leak, and I never received a warning light or dashboard message. I tried unplugging the sensor and still nothing showed up. I tried plugging into a new ...
Geo's user avatar
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3 votes
1 answer
569 views

Replace radiator hoses with radiator when rust is present in coolant?

The radiator on a 20+ year old Jeep XJ recently bust. The fluid that came out was a rust colour, likely indicating that the radiator was at least partially filled with water instead of coolant (...
End Antisemitic Hate's user avatar
1 vote
0 answers
62 views

14 Dodge Dart overheated

My son’s car ran hot a month ago and he said it lost power. Car was towed in radiator hose had came off they replaced that oil still looked good. The next day it ran hot again this time they replaced ...
Keisha McCombs's user avatar
3 votes
1 answer
224 views

Adding Pure Antifreeze to Coolant Tank

My car has a slow coolant leak from the radiator so I've been topping up with distilled water until I can afford to have it fixed. Colder weather is here, so I bought an antifreeze test to make sure ...
James's user avatar
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1 vote
0 answers
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I have a '93 Pontiac firebird with a 5.7 i believe I have a coolant block in my engine. How can I fix itblock [closed]

I have already replaced thermostat, fan motor, and water pump, flushed out radiator
Angel's user avatar
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1 vote
2 answers
47 views

Safety of coolant question

I have a pretty nasty coolant leak in my car. I have to fill my radiator about twice a day. Anyways— because of the frequency that I have to fill my radiator I keep a bottle of coolant in my car. ...
James Singewald's user avatar
0 votes
0 answers
71 views

2003 acrua mdx. Coolant leak between ac bracket and engine block dripping on corner of oil pan

This 2003 acrua mdx leaks coolant from the alternator and ac compressors bracket mounts and leaks between block down on the corner of the oil pan is there a freeze plug hole it could be leaking ...
Carla Chavez's user avatar
2 votes
1 answer
127 views

What's going on with the "temperature" part of this pressure gauge?

Ok, I think I finally understand the pressure bit of this gauge that came with this set of poorly documented hoses I got off Amazon. From 0 to 350, it's actually measuring pounds per square inch (PSI)....
lly's user avatar
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5 votes
1 answer
1k views

Smoke coming from hood. Car turned off . wrong coolant was added..Why wont car turn on or what could be the issue

2011 Toyota Camry got an oil change and friend added coolant (dont think it was the right one). For a couple days when i would drive car would make loud noise. Drove it for couple days when one day ...
Lucy Aguilar's user avatar
0 votes
0 answers
78 views

Coolant boiling but no overheating

Car has been fine, I just drove 3 hrs and when I got to my destination my coolant was boiling. what do I do? No overheating ever just had ac fixed an coolant filled. I have to drive another 2hrs ...
Olivia Winkelhausen's user avatar
1 vote
1 answer
133 views

Honda Civic: engine temperature changing quickly

Vehicle: Honda Civic 2004 1.4L Issue: According to thermometer, engine temperature changes from normal (about half) to maximum within seconds, and back to normal equally quickly. For example, it might ...
Mr. Engineer's user avatar
1 vote
1 answer
191 views

Coolant issue citroen c4

How do I drain the old coolant, which is mostly water, in my citroen c4 as I need to add 100% coolant due to overheating problems
neil webster's user avatar
0 votes
1 answer
2k views

Coolant level rises strangely!

Please read the full story before posting any comments or answers. Recently, I noticed some strange behavior in my car. Normally, when you check coolant level when cold then you drive your car and re-...
LFY MP7.3's user avatar
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3 votes
1 answer
1k views

Coolant tank drains too fast of Boxer 435

I have Peugeot Boxer van (435 onnicar) and its radiator coolant drains too fast(in one day, it's already empty). I.e. In the morning, if I fill up with water and at half of the day it's almost drain. ...
Phoenix404's user avatar
5 votes
1 answer
818 views

I put Adblu in radiator coolant tank in Peugeot Boxer 435 Onnicar

My coolant tank was empty and there was a plastic cane in the cockpit/dashboard, so I thought, it was water and I put some in the coolant tank. I am pretty sure it was less than 500ml. Driver is using ...
Phoenix404's user avatar
1 vote
2 answers
171 views

Truck is overheating only while idling

My Problem 2011 Chevrolet Truck Silverado 1500 WT 2WD 4.3L FI OHV 6cyl is overheating while idling. It takes about 2-3 mins, so drive thrus and multiple red lights back to back are the main culprits. ...
Daniel's user avatar
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3 votes
3 answers
2k views

Coolant loss on VW, no visible leaks, no combustion leak detected

My 2006 VW Passat 2.0T is losing coolant in the past few months. I have added 2qt distilled water for a 7.6qt system. Less than 1000 miles driven. No visible leaks. No combustion leak detected (...
Ramyad's user avatar
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2 votes
3 answers
2k views

2004 Honda Civic OverHeating (Lots of Details and Pics to Help Diagnose)

I have a 2004 Honda Civic thats new to me and just started overheating. I first noticed a month or two after I bought it...I was idling in park for 45min or so when I noticed steam coming from the ...
NULL's user avatar
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-2 votes
1 answer
44 views

Added coolant repair to my car

I added coolant repair to my car. how long do i have to wait to add coolant into the tank? I’ve waited 20 mins after i poured the coolant repair in and the engine has cooled.
Donovan Peterson's user avatar
1 vote
2 answers
343 views

Dominar 400 2022 engine coolant level is little over max

I bought a new Dominar 400 2022. When I went for the first service, I observed that my coolant level was almost touching min. So I asked the service engineer to top that up. When he topped up, he put ...
Sandeep Pujare's user avatar
-1 votes
2 answers
5k views

Truck will not reach operating temperature

My 2005 GMC SIERRA 1500 runs at about 180/190 degrees, and won't heat up beyond that. The thermostat and coolant temp sensor have been replaced, and I've been trying to burp the system with hit and ...
Ben Hopson's user avatar
2 votes
1 answer
4k views

Accidentally mixed orange and green antifreeze

My car has a slow coolant leak that mechanic hasn't been able to identify that takes about a year before there's an issue. It was running low and it was Christmas eve so I couldn't get Dexcool (I ...
Allan Schumacher's user avatar

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