Coolant

Pushpex · 12-02-2021, 14:30

I know this question has been asked a million times before, but I couldn't find a definitive answer, when I drained the coolant in my IV it had red coolant however I'm guessing it used to have green coolant as there was a load of scum and a layer of brownish red scale on the inside of the radiator. Since then I have been running de-ionised water and coolant flush to flush the old coolant, but now I need coolant as it's getting colder. A lot of people on here seem to recommend Comma 48 (green), others Comma 30 (red) and opie oils recommends/ rosssport sells Motul Inugel Optimal (orange).

Does anyone here have experience with mixed coolants and getting rid of the scale? And what would you recommend for my current situation? Red so I'm not mixing again or green so it's back to how it was? Apparently it used to be green from factory but people also say Japan standards are different from EU so green was equivalent to red?

Thanks!

b6lee · 12-02-2021, 22:06

Comma extreme green is the only coolant you need

EvoIVCed · 13-02-2021, 11:31

the Comma green was recommended to me now the car wont but going for sun in the sun, but Cold Cold wet and mountain life smh!!!

Pulsarlee · 13-02-2021, 19:50

I was recommended to use blue mono ethylene glycol by a trusted evo specialist for my 7. Also use this on my BMW no crud or corrosion and very strong stuff. euro car parts 3.98 for a litre of QX concentrated

oilman · 23-02-2021, 15:21

Evo IV's are not fussy on coolant/antifreeze as such. The important thing is not to mix different types.

They are happy on standard blue monoethyleneglycol all the way to OAT coolants.

Cheers,

Guy

12-02-2021, 14:30	#1
Pushpex Senior User Join Date: Jun 2019 Posts: 162	Coolant I know this question has been asked a million times before, but I couldn't find a definitive answer, when I drained the coolant in my IV it had red coolant however I'm guessing it used to have green coolant as there was a load of scum and a layer of brownish red scale on the inside of the radiator. Since then I have been running de-ionised water and coolant flush to flush the old coolant, but now I need coolant as it's getting colder. A lot of people on here seem to recommend Comma 48 (green), others Comma 30 (red) and opie oils recommends/ rosssport sells Motul Inugel Optimal (orange). Does anyone here have experience with mixed coolants and getting rid of the scale? And what would you recommend for my current situation? Red so I'm not mixing again or green so it's back to how it was? Apparently it used to be green from factory but people also say Japan standards are different from EU so green was equivalent to red? Thanks!

12-02-2021, 22:06	#2
b6lee Senior User Join Date: Oct 2008 Location: bath Car: now on my 3rd evo :-) Posts: 5,866	Comma extreme green is the only coolant you need __________________ its what you do to a evo vii that makes it look nice To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

23-02-2021, 15:21	#5
oilman Senior User Join Date: Jul 2004 Location: South West Posts: 2,830	Evo IV's are not fussy on coolant/antifreeze as such. The important thing is not to mix different types. They are happy on standard blue monoethyleneglycol all the way to OAT coolants. Cheers, Guy __________________ Use the code MLR and get 10% Club Discount Oilman's website for To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. and much more - register for news and offers. Email: To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. Phone: 01209 202944 Sign up to email offers: To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

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13-02-2021, 11:31	#3
EvoIVCed Registered User Join Date: Jul 2017 Posts: 69	the Comma green was recommended to me now the car wont but going for sun in the sun, but Cold Cold wet and mountain life smh!!!

13-02-2021, 19:50	#4
Pulsarlee Registered User Join Date: Dec 2017 Location: Sheffield Car: Evo 7 2001 400/380 Posts: 168	I was recommended to use blue mono ethylene glycol by a trusted evo specialist for my 7. Also use this on my BMW no crud or corrosion and very strong stuff. euro car parts 3.98 for a litre of QX concentrated