DIY - 2014 Opel Corsa D 1.4: Fully flush the coolant

Following the previous coolant change using normal drain and fill, I wasn't very happy with the results (the coolant was still dirty after more than a month of driving), I decided to do a full coolant flush. I went with a method that doesn't involve thermostat removal and the use of non-distilled pressurized water. To do this I did the following:
- I added a radiator and cooling system cleaning solution and drove the car for about 30 minutes in order to allow the solution to work
- While letting the car idle and using the pressure from the water pump, I progressively drained the old coolant and replaced it with 100 % distilled water
- When the drained coolant became transparent (indicating that the distilled water had pushed out all of the old coolant), I allowed the radiator to drain normally
- At the end I knew I was left with about 3 liters of nearly-pure distilled water in the system, since the cooling capacity of a 1.4 Corsa D is 6 liters and a normal drain removes about 3 liters; this meant that in order to achieve the desired 50 % - 50 % mix of antifreeze and coolant, all I had to do was add about 3 liters of 100 % concentrated antifreeze

Disclaimer: This video was made in the hope that it will be useful to other DYI-ers that work on the same vehicle model. The author of the video is not responsible for any kind of personal injury, property damage etc. that may arise if anybody tries to perform the same job on an identical or otherwise similar vehicle based on the contents of the video. Every DIY operation performed on your vehicle poses direct or indirect safety risks to you and those around you. Before attempting any such DIY job, please make sure that you have all the necessary tools, support and confidence to see it through successfully.

[leemclaughlin]

That hidden menu for the coolant temp is spot on 👍 cheers for that info

[Regentalgorgon]

Hey, One question when you drive after change the coolant, you have close the cup, or not, becauese i have tried the same and when i drive the colant start bubbling

[teodani]

Salut! Chiar urma sa fac si eu un schimb de antigel la opelul meu zafira tourer(2012), si videoul tau a picat numai bine.Felicitari pentru modul detaliat de prezentat, chiar ajuta. Eu am cautat acel aerisitor de la radiator, dar nu lam gasit, posibil sa nu aiba?

[linuxmad]

Hello! Thank you for the video. I own the exact same model. Need to clarify one thing: During the process of draining/filling the coolant, do I need to keep the car "tilted"? - That is, keep the lower front point (draining exit), by jacking the other front side? or can it be done with the car on normal stabilized position? Thanks

[matthewjames]

Thank you so much for this video and for taking the time to create it. I have been wanting to do this for a while. Glad I found you. Sub'd and liked! :)

[evieemaya]

Love you r videos, very detailed keep them coming on the Vauxhall Corsa. Would love to see a gearbox oil change

[Sebah]

Hey man thanks for the content and keep up the good work. I was wandering if you were using a smatrphone to film, which would leave you only with one free hand. You could use something like a gopro and some small mount, probably a forehead mount. Again thx and keep up the good work! 👍🏼

[dimitrismessinis]

Can you explain how you bypass the thermostat in order to fully flush the coolant system? When engine is cold thermostat is closed and coolant flow is pump-engine block-closed thermostat-pump and go on.
At 60 degrees thermostat is half open in order to fully flush the system or its made via heat exchanger hose to expansion tank ?

[jamiejeffries]

Hi, you’ll be able to see there’s a small leak on my car, on the two black wires connecting to the left side of the engine (right at the top near the belt? what are these little pipes / connectors? Are they to do with the coolant? I believe they are.

[qq]

Are you already changed your Coil pack ? you recommend to buy china 50$ or OEM 150$ ?

[john-peters]

Can i use prestone coolant/ anti freeze. it’s a yellow ish colour. It says on the product it is compatible with all engine types

[patrickbateman]

Is 102 - 110c running temperature ok for a12xer engine (opel corsa 1.2 16v)

[MattDTLMaze]

Is this method and the HEPU also valid for the Corsa 1.2 petrol A12XER?

[lmr]

Can i use this method on other car models like mazda6, i didnt do this last time in mazda this method is genius

[netanel]

How you disconnect the car computer (that connect to battery house)

[alicankaradeniz]

I wonder whether the operation is same with 1.3 cdti or not.

[Professional_Youtube_Commenter]

imho you need to keep you old thermostat. dremel out the the inside of it. then firt it into your car. this method will cool the water so you the thermostat will shut off. it takes a good 10-15 minutes of driving to open the thermostate, and the temp is just too hot at that point to handle this way

[Zap]

Hy, you need to change your timing chain🤝

[herrlip]

I prefer using extra coolant to flush rather than distilled water

[szyms_on]

Hot to drain water fully? Because i don't want to use a concentrate