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When I started smelling coolant thru the vents, I got a recommendation to add Subaru Coolant Conditioner to the coolant expansion tank. It reduced and ultimately eliminated the smell.
Worth a try before diving in head first on replacing parts.
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Sergio
The GT Lid Whisperer
PCA 43yrs - National DE Instructor / Ex-RGruppe #197
'19 718 Cayman S (9th Porsche/1st w/ PDK)
'23 Subaru Outback Turbo XT (Porsche support vehicle)
Last edited by PCA7GGR; 12-16-2021 at 05:28 AM..
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