Subaru does NOT recommend…
Subaru does NOT recommend changing CVT fluid every 30k miles. It only recommends an inspection. In Subaru's Warranty & Maintenance booklet, the maintenance chart shows "I" every 30k miles. Subaru defines "I" as "Inspect, correct or replace if necessary" - hardly a firm recommendation to change CVTF every 30k miles. Subaru's only firm recommendation to change CVTF is for repeated trailer towing and that recommendation is ~25k miles. That being said, my non-towing Subaru Forester gets a CVTF flush every 60k miles.