Hi, which of these oils would you recommend on these 2 cars in the US (Using Gas with 10% Ethanol):
For a 2006 BMW 325XI (E90):
Amsoil European Formula 5W-40
Redline 5W-30
Redline 5W-40
For a 2001 Mercedes CLK430 (W208):
Amsoil European Formula 5W-40
Redline 5W-40
Thanks.
