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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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3answers
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Switching engine coolant with similar properties oil

I was wondering why specific coolants or distilled water is used as a heat transfer liquid for engine cooling instead of just using a separate oil circuit with some type of oil as a heat transfer ...
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27 views

Water-to-air intercooler - isolated or shared coolant?

I have a 2016 Ford Transit. But answers that apply generally will be fine too. It has a turbo and a water intercooler. I did a coolant flush, but I'm wondering if they did it right. One shop said ...
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Engine randomly over heated and emptied all coolant

So I just picked up an 03 Audi A4 1.8 T Quattro and was driving it around a bit trying to get used to manual. I had been driving it for the better half of two days, took it up to my mechanic buddy ...
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Mazda 323 astina 2003 model

What is the correct coolant level when the engine is cold. There is a full and low gauge on the coolant reservoir.
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Does a 2004 Ford Fiesta need bleeding for coolant change?

i need to change a cracked expansion tank and so will drain the coolant and replace it as i think that the previous owner was topping it up with neat water for awile. Does the coolant system need to ...
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Jeep Patriot 2009 Model smoke from under hood when in traffic **PLEASE HELP -ADVICE***

I brought this jeep form a dealership about 6 months ago. When we got it there was nothing wrong it? Took it in for its first service and they advised everything is fine and replaced a few light bulbs....
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1answer
39 views

What is the chemical difference between various brands of coolant additives (SCAs) for the cooling system?

In the manual of my vehicle, CAT recommends using their SCA over others. Is this just marketing or do different brands create different SCAs that affect longevity/chemical interaction/etc?
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1answer
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coolant query bmw

i know this can be a pretty generic question and would apply to all cars but I'm no mechanic so here it goes. i have a bmw 318 2007. I have recently topped the coolant up correctly so the float rises ...
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Coolant cycling too high and low after (motorcycle) accident

A number of months ago, I hit a deer while riding a 2018 Triumph Street Triple R (motorcycle). Since then, the motorcycle frequently drops a significant amount of coolant out the coolant waste tube, ...
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1answer
70 views

What are the consequences of driving my car with low coolant for five minutes without reaching the limit on the temperature gauge?

Background information: I was driving a 2008 Jeep Wrangler 3.8 L. Before I noticed the gauge, I first noticed the A/C on cold stopped working. Then the temperature gauge needle hovered a little over ...
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Oil in Coolant, Renault Megáne MK3 1.6

Yesterday while topping up my screen wash I noticed that I have oil in my coolant tank so I took the car to a mechanic that has said it doesn’t seem to be the head gasket as it’s not showing signs to ...
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1answer
25 views

Over heating Dodge Avenger

So, my radiator hose exploded off , got the new one on and now it’s overheating on idle I put water in it until it’s fixed because I don’t want to spend a lot of money on coolant when it couldn’t be ...
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Coolant 2004 Honda Civic

Can I put coolant in the same place that I put water in my car or does it have to go in the coolant reservoir?
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1answer
31 views

Oil on top layer of coolant Reservoir

So recently when I got an oil change, they checked my other fluids and notified me that there is oil in my coolant... again. Last year, I noticed oil in the coolant and took it to a mechanic, they ...
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1answer
36 views

Can I use a lower ratio of coolant to water in a hot climate? (N. Texas)

I'm looking at a fluid flush for my 2010 Nissan Altima. I want to ask if there are concerns or benefits to using a lower coolant ratio. I travel to Kansas for the holidays, where it's quite a bit ...
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1answer
86 views

Coolant empty on Honda Accord with no signs of leakage

I am buying a used Honda Accord 2004 and yesterday I brought it to the garage and the mechanic said that everything is good except that the coolant is empty. Yet according to the owners, the engine ...
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Does coolant have a shelf life? [duplicate]

I have found some old opened bottles of coolant (green, undiluted, aluminum safe) in my garage, they've been opened and partially used. The remaining coolant has been there for somewhere between 5 ...
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1answer
29 views

Possible overheat

I have a 2011 Nissan X-Trail, 2.0 Turbo Diesel. Couple of days ago, we had a heat wave 39C / 102F. Normally the temp gauge gets close to the vertical axis of the cluster, so not really in vertical ...
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1answer
111 views

2014 Ford Escape - High engine temperature on start

It was a hot day today - around 90f, and the car was parked outside. As we were getting ready to leave, I did the remote start. We get in the car about 5 minutes later. Right As I’m about to start the ...
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Poured Antifreeze Coolant into radiator without diluting. Any issues? How to remedy it

There was smoke from the radiator while driving, and after googling, realized that i might need to add coolant fluid. Last night, I bought a can of antifreeze coolant and filed the radiator and spare ...
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1answer
29 views

Engine coolant help

Hey I had water on expansion tank as ran out for coolant I have add pre mixed coolant and it sunk to the bottom and is separated from the water that was already existing in the expansion tank is ...
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1answer
31 views

Is it safe to flush it?

I've got a 1989 Chevy Cavalier sedan. 78,000 k. Previous owner let it sit for 7 years. I've drained and replaced the oil, fuel filter, hoses and such. But my coolant tank is completely encrusted in ...
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1answer
53 views

02 Honda civic LX 1.7-1.8 not sure. oil is leaking into coolant/radiator

so my wifes car had ran into some issues about 4 days ago when her car quit on her while driving from our sons school. she said that the oil light had came on moments before the car gave out and shut ...
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1answer
52 views

Can I use 3/4“ or 5/8” heater hose instead of 18 mm?

I have a '94 Honda VFR and two of the coolant hoses are 18 mm ID. 18 mm is a very unusual ID, and it would be easier to for me to go to the auto parts store and get a size they have in stock, which ...
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1answer
63 views

How much coolant needs to be added to radiator?

I drive a 2001 Buick Century. It has had some coolant problems/leaks on and off. My father in law was helping me with the car, and he told me that the radiator must be filled to the tippy top up to ...
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1answer
68 views

Honda Accord 03-07 CDTi leaking coolant, no drips, no steam, no mayo

My car is a UK Diesel Honda Accord 2.2 CDTi So I've had a problem with my car for about a week, it started overheating and not accelerating when I put my foot down on the accelerator (losing power) ...
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1answer
201 views

How to flush a cooling system after head gasket failure?

I recently replaced the head gasket in my Renault K9K (700) 1.5 DCi, due to a cylinder/cooling system type failure. As such, the cooling system is full of partially burned diesel. Despite having ...
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14 views

Engine coolant changed colour

Hi I have a corsa and when I put in engine coolant it was bright pink now it looks clear should I change it
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34 views

Coolant level fluctuation

2011 Nissan Xtrail, 2L diesel, 160.000 km. I noticed that while driving, coolant level drops below minimum mark. If i let the engine cool down, level rises to the same mark, almost to max. What ...
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Possible coolant leak?

Over the course of the last 6000km on my FZ8 motorcycle I have noticed a small coolant level drop. I estimated the volume has dropped about 100cc. My motorcycle engine has reached 18.000km ...
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1998 Honda Civic LX coolant spillage after running AC

I ran my car yesterday for about 4 hours and there were no issues. Upon going out to my car this morning, I notice a leak of some sort coming from underneath my car. So I touched it and sniffed, sure ...
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97 Mazda protege coolant boiling over

Why does my coolant reservoir boil over after I shut off the engine? Temp gauge doesn't move while I'm driving. I just replaced the radiator cap. It's better now, but still boils over. I see one fan ...
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278 views

Can antifreeze damage exterior paint?

For some background, I was driving my 2010 Mustang behind a pickup truck and all of a sudden there was a TON of smoke and liquid on my windshield/hood. I was lucky to not crash. My best guess is his ...
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35 views

Engine coolant not hot

Recently bought a 85 bronco ll with a 2.8 motor. Engine coolant won't reach normal temp. Changed the thermostat, flushed and refilled coolant, but still had the same problem. Replaced radiator cap, ...
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1answer
33 views

Ford water in engine

So the air filter has holes in the bottom of it and sucked up water into the air intake. The water mixed with the oil and caused the engine to start burning coolant. Ive drained the 97 ford ...
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66 views

BMW X3 2012 28i (F25) Coolant Leak

I have a 2012 BMW X3 28i with about 68,000 miles (109,000 km) on it. I received an alert that my coolant was low last week. I immediately went out and bought coolant and filled the coolant reservoir. ...
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Exhaust in the Coolant 2000 Honda Civic EX

I know the 'go to' answer for this is the head gasket. But: the mechanic just did an engine overhaul and same problem persists. Allow me to explain. In November 2018 mechanic did work and replaced ...
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1answer
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Mechanics left the cap off my radiator. Can this cause proven damaged to my engine?

I had a service done on my car I drove my car home (40 min drive) and noticed the heating wasn't working. I checked under the bonnet the next day and there was no liquid in the radiator reservoir and ...
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0answers
26 views

2006 chevy equinox overheating

My 2006 chevy equinox was overheating, temp gauge fluctuated up and down, and blower was not working at all. Also fans would come on and stay on for about 5 minutes after ignition was turned off. I ...
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1answer
61 views

Radiator Flush Mazda 3 2010 - 100,000 miles

I'm working on flushing the radiator on my 2010 Mazda 3 at 10,000 miles. Am I correct to assume an appropriate process is to iterative by filling and drain the system with distilled/de-mineralized ...
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2answers
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It's 18° I have zero fluid in my radiator I have one gallon fr eze it says do no add water of fluids what do I do

Dodge ram 1500 2001 5.9 l what do I do surely my system requires more fluid water etc ..
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1answer
46 views

Coolant temp. is normal, no leak, but heater core unit gets very hot

Vehicle: 2005 Mazad3 Hatchback (1.5 L) 4AT Issue: The heater core unit beneath the dash unit gets very hot after around 15 mins drive (AC is turned off) While the coolant temp. gauge shows not ...
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1answer
29 views

99 Alero overheated due to low coolant, coolant light stays on after filling coolant

I was driving my 99 Alero and it started to overheat quickly like went from normal temp to red line in about 90 seconds. I shut the heat off and it dropped back down. Then the coolant light went on. I ...
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Burning Rubber Smell

I have a 2015 Chevy Trax. Recently I have noticed that when the car is idling it smells like burning rubber and will only happen after about 10 mins of driving. Living in northern Ontario I warm my ...
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3answers
168 views

Re-filling the coolant - Susuki Ritz (Splash)

I have a diesel (DDIS) version of the Suzuki Ritz/Splash. I would like to re-fill the engine coolant, as it has been topped-up for a long time now, and might be mostly water than actual coolant right ...
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0answers
594 views

Mixing same color coolant from different brands

My toyota car has toyota pink color long life coolant. And I have topup it with Seiken Hyper long life coolant (pink) since I couldnt find the toyota one. Will it be ok? Both coolant has Ethyl glycol ...
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1answer
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Car engine coolant system (radiator cap) air

I have only one question! So what I've heard, it's bad to have air left in the coolant system! So my question is, can air get inside the coolant system if I just take off the radiator cap to check ...
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2answers
73 views

Oil still in coolant 99 Accord

Took my car to a shop and I honestly don't think they are the best even though they seemed like they knew what they were talking about. Long story short they did a head gasket repair, replaced the ...
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0answers
89 views

Why would a coolant reservoir be full to the top when the engine is cold?

I’ve got a 2004 Honda Civic DX that has been acting up lately. It started with the inside of the car started blowing cold air when driving at low speeds or in park, and I thought it was maybe the ...
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0answers
166 views

Cyclinder 2 misfire error code - 11 Dodge Journey 3.6L V6

2011 Dodge Journey Mainstreet 2wd 3.6L V6 100k miles Check Engine Light on, first read Low Voltage replaced Battery Check Engine Light came back on, 2nd read Cylinder 2 misfire, & Thermostat ...