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Old 07-10-2019, 05:20 PM   #1
Kenword
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Outback Sport What color is Subaru coolant?

Hi all, I recently bought my first Subaru ever, a '99 Impreza Outback Sport. I've been checking it over carefully as I have no maintenance records. I noticed the coolant was not the bright green color I expected so I decided to change it. When drained it out I was shocked to see it was kind of an amber color, closer to the color of new engine oil than the shades of green I've always seen before. To my relief, all the cooling passages seem to be surprisingly clean and corrosion free.

Last night I was reading through some old End Wrench articles posted on SCOOBY enthusiast and read that Subaru anti-freeze has a unique formula which makes it quite a bit different from the standard anti-freeze I have used before. While I learned quite about coolant, I don't remember any mention of what color it should be. Since GM makes it's unique long life formula red I wondered if Subaru uses a unique color as well.
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Last edited by Kenword; 07-10-2019 at 05:31 PM. Reason: more info
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Old 07-10-2019, 05:26 PM   #2
jasonwrx86
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I know my 2018 is blue ish green.
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Old 07-10-2019, 06:43 PM   #3
crick0234
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i'm gonna assume its the subaru blue coolant, which is an HOAT coolant? wonder if u gotta use the subaru longlife green coolant if that's still available?

the greenstuff that autozone and oreilly's marks as "Universal" was actually something similiar to DexCool... even tho it says its safe, i shoved that green stuff into my car and with in 10K miles, massive precipitation from it , brown gunk everywhere. Flushed my car and went back to HOAT coolant (subaru long life).

Something about our engine blocks and how its grounded causes it it to precipitate a bunch (electrolysis). last time i used that over the counter stuff.
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Old 07-10-2019, 08:48 PM   #4
CaptainSlowbaru
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Subaru switched to the "Super Coolant" around 2008- it's teal in color, and comes pre-mixed.

The old "long Life" coolant is green, and it comes as a concentrate. It is very much still available.
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Old 07-11-2019, 03:50 PM   #5
curiousfish
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Quote:
Originally Posted by CaptainSlowbaru View Post
Subaru switched to the "Super Coolant" around 2008- it's teal in color, and comes pre-mixed.

The old "long Life" coolant is green, and it comes as a concentrate. It is very much still available.
yup! and only some late 2008 vehicles came with the blue.
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Old 07-11-2019, 04:36 PM   #6
Charlie-III
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When in doubt, use a "universal" coolant from any parts place.

To be totally sure....drain coolant...refill with distilled water (or filtered water from your house dehumidifier......as I have done for decades....), run a few weeks, drain, fill, repeat.
Then, use a correct coolant (for aluminum engines) and distilled water mix to make things right.
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Old 07-12-2019, 12:34 AM   #7
CRSPlayer
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Default Why blue?

Along with Honda why dye blue? So American motors go orange or red when use to be green?
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Old 07-12-2019, 01:35 AM   #8
LKN624
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Here in Europe, at least in Germany for my 2006 STI Limited...from I think 2001 until 2006 Subaru uses a Pinkish Red. Weird I know as I am used to seeing the Dark Green or Teal. Guess different markets have different colored fluid.
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Old 07-18-2019, 01:57 PM   #9
AWxGD7
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id stick with OEM blue or green coolant, but i heard if you have blue coolant in your car. you shouldn't mix green in. if you want to be on the safe side just get a coolant flush with blue and stick to it.
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Old 07-18-2019, 02:53 PM   #10
curiousfish
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Quote:
Originally Posted by AWxGD7 View Post
id stick with OEM blue or green coolant, but i heard if you have blue coolant in your car. you shouldn't mix green in. if you want to be on the safe side just get a coolant flush with blue and stick to it.
I have an old email from Subaru stating just that. Not backwards compatible.
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Old 07-18-2019, 04:28 PM   #11
mishapopa
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newer subarus use blue
older subarus use green
a 99 would use the green stuff
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