Don't mix Subaru Super coolant with Subaru Longlife coolant
 

This is what have been advised regarding the European versions of the above two coolants:

"Dear Sir

The main difference between the Subaru antifreeze from Switzerland Super Coolant Long life K067EYA004 (silver canister) and the original Subaru antifreeze from Germany K067EYA000 (black canister) is the technology and service life of the antifreeze.

Switzerland - technology is of classic carboxylate antifreeze, the additive acts specifically at the site of corrosion formation. Type SNF, additive G30. This type of antifreeze is suitable for Subarus from 1977 to present. Service life 5 years or 100,000 km.
Germany - phosphate lobride technology P-OAT. Used as a factory fill product since 2011, in >MY 2012 cars. Forms the thinnest film and sends the additive directly at the site of corrosion formation, like G30. Service life is 11 years at first filling, then 6 years or 120,000 km.
This one is suitable for your BRZ MY 2018.

Both types of antifreeze can be used in Subarus, but THEY CANNOT BE MIXED!
Important: mixing Silicate Nitrite Free and Nitrite Free (G48 hybrid technology) is prohibited, as well as with lobride (G40).

When changing the type of antifreeze, it is recommended to carry out the change with certified equipment at Subaru service!
Regardless of what antifreeze you use, it is useful to have a supply of the exact antifreeze that is poured into the cooling system when traveling.


Best Regards"


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For us US folks, this just means don't mix the blue "super" coolant that comes in these cars stock with Subaru's older green coolant.

I prefer to keep the same coolant in the car it came with. Green with green, blue with blue. For twins, that means just using the blue super coolant always.

Keep it simple.

(Supposedly the blue super coolant is backwards comparable if you do a full flush. Always felt Subarus were weird with coolant and it was best to stick to the original.)

The Super Coolant is the latest and newest coolant from Subaru that you can't mix with the Long Life Coolant which is for older cars.
The first one is blue the second is greenish blue, not much different.

Just mix a little green in with the blue. Should get you there.

Instructions unclear. Mine is Blue Pink now

That's the GPS lube. Helps going around corners.