Asemaster, I have only used 5w-30 Dexos approved oil. The last oil change before I took it to dealer was Pennzoil Platinum full synthetic and the oil consumption was over 2 quarts. The 2 prior oil changes were Quaker State and Castrol semi-synthetic oil, oil consumption was much lower (less than 3/4 qt.) over the same interval of 4500 miles.
I’m curious to see if the oil consumption will continue to increase regardless of the type of oil or if going back to semi-synthetic will lower the oil consumption. If oil consumption is the same or increases then it’s an engine issue.
I hope this answers your question.
Ed B.