Did a full can of LM MOS2 in my 02 WRX one OCI 2-3 years ago; now a half can each 5-6K OCI. Quieted the valve ticks some. (RT6 with M1 R4T for add bump; but going with M1 FS euro and Racing 4T next week...because [censored] not?)
Got a CPO '15 Outback Limited last year at ~19K miles. Did a LM Ceratech dose right after purchase with a 6k OCI, which really quieted the timing chain and cold start noises (also seemed to be a smidge low of a fill from dealer). Oil changed at dealer last week; did a full can (also seemed like a low fill) of LM MOS2, also quieted cold start noise on OEM 0W20 synth; will do 1/2 can per change going forward and a CeraTech dose every 25K miles (~2.5 years as my wife's commuter).
Got a CPO '15 Outback Limited last year at ~19K miles. Did a LM Ceratech dose right after purchase with a 6k OCI, which really quieted the timing chain and cold start noises (also seemed to be a smidge low of a fill from dealer). Oil changed at dealer last week; did a full can (also seemed like a low fill) of LM MOS2, also quieted cold start noise on OEM 0W20 synth; will do 1/2 can per change going forward and a CeraTech dose every 25K miles (~2.5 years as my wife's commuter).