Just curious if I can run 0w40 in my Skyactiv Turbo. I'm currently running Castrol European for it's more robust additive pack, and because it is produced in Austria. The Euro 5w30 has gone up in price, but the Belgium made 0w40 is $21.97 on Amazon and $22.98 at Walmart. I don't see how a thicker hot weight could be troublesome; if anything it will provide now protection for the turbo. The Castrol GTX Silver Synthetic jug is an unknown right now, because it is so new.