May want to try the piston soak and/or a run of the HPL EC30. When we got our Element the beginning of last year(oci not properly done on time) it was burning about 2qts every 5k w Mobil1 HM 5w20 that I did the first oci w. Did piston soak, PCV, 5w30 instead of 5w20, tried Maxlife red bottle, couple Rislone runs and Gumout Multi-System Tune Up the last 500miles and it helped cut it down but not stop burning. Put HPL EC30 in it w QSFS 5w30 and it is close to 4k miles on it now and 2nd filter change. Since the last filter it has 1k miles now and checked the dipstick the other day and it is just off full maybe 1/8" now. Hopefully it stays that way, may give it a shot or at least 30w or 40w.
Could also try adding a pint of Schaeffer Moly EP w a 0/5w20, would probably bring it up to a high 30weight or low 40weight. It has helped w my trucks oil burning.
Edit- Or the HPL EC40.