The silicon seems high? Is that from anti-foamant, sealant or contamination? It doesn't seem like contamination because wear numbers look low, which is great. What is the total mileage on this Crosstrek.
I am running HPL 10w30 in the CK flavor in a 2008 Subaru Outback. Before using HPL lubricants, I had been using mostly HDEO's and later Pennzoil Platinum 5w30 in the winter. Oil consumption has always been about a quart every 3000 miles. Now, using HPL CK4 oil in 10w30, the engine seems to burn a quart about every 5000 miles. The car has about 235,000 miles on it total.
Based on the result of the HPL oil in the Subaru, I am going to use the same HPL oil in the rest of the fleet and probably HPL's 15w40. HDEO in the Dodge diesel truck.