I don't think so. Your OEM coolant is the green long life coolant without 2EHA.

Subaru's blue super coolant was recently changed to include 2EHA though.

Gen 6 - New Subaru Super Coolant Formula Part # SOA868V9272

Just FYI. I saw Subaru has a new coolant that replaces SOA868V9270. The white bottle we grew used to has been replaced by a black bottle, but that isn't all. The new coolant has an additional corrosion inhibitor: 2-ethylhexanoic acid, sodium salt. New vs Old labels. I'm still looking into how...

www.subaruoutback.org

I'm not sure what implications this chemistry change has for compatibility with older Subarus, or for mixing blue and green coolants.
Old threads that discuss green and blue coolant refer to the old formula of blue, not this new one.

 

If you know a part number for the "older" non-2EHA stuff.. I'd much prefer to have that than my "stash" which has it. Linked: https://bobistheoilguy.com/forums/t...vs-iat-coolant-engine-specific-application-and-differences.371435/#post-6562393

 

SOA868V9210

SOA868V9210 - Factory fill long life coolant - Genuine Subaru Part

Genuine Subaru Part # SOA868V9210 - Factory fill long life coolant

parts.subaru.com

Here's an OLD article (PDF) about Subaru Long Life Coolant

https://automotivetechinfo.com/wp-content/uploads/2005/11/What-Subaru-Antifreeze-Should-I-Use.pdf

 

I like that there is no 2EHA.

Is this coolant green or blue? SOA868V9210
*is the 10 Green and the 70 Blue?
The Green SOA868V9210 is fine, no 2EHA?

 

with a 2002, might as well put in traditional green mix if you got it. cheaper to replace if you spring a leak, ....with more of the stash.

(in my garage I have: green for old subarus, blue peak brand for the 2018, and orange silica for chevy type things "need" that crap,...

and yes I remember to put the subaru coolant conditioner in a load of green for old subarus to keep them happy..

 

Long Life = Green, Super = Blue.

The Long Life (not super) coolant should not have 2EHA