Got any proof other than your emotions? OP’s vehicle is a
2015, at which time the most current (and mentioned in OP’s OM as posted above in this thread, was API SN. Period.
SN+ was not even in existence on the shelves until May 1, 2018. It does not apply to OP’s vehicle. May it be better? Possibly, but doubtful. There’s zero evidence that SN+ is “required”. EcoBoosts have never been known for LSPI, and it SN+ wasn’t even a twinkle in anyone’s eye when the OP’s engine was designed. The Euro L with API SN is fine, and the Euro certs add even more “cushion” to the API minimums that will protect the OP’s engine.
I really would love to see some proof though, that SN+ is the only way not to be “ignorant”. I’m running a VW 502.00 oil in my EcoBoost for over 22k now and it’s running better than ever, at over 500rwhp. #TeamHPL