I have a 2019 Audi RS3, built/sleeved motor. I’m told to use 5w40 oil in it. I was curious about redline 5w40 or 5w30 (I’m told redline runs thicker) so 5w30 may be ok to use. I was also looking into AMSOIL 5w40 euro fs or their 10w40 dominator. Does anyone have suggestions or information on these oils as to which would be a better choice. Thank you