Did any of you ever hear of Shell's fully synthetic motor oil, which is called Shell Helix Ultra 5W-40 ? Here's the link for this motor oil :
Keep in mind this oil is the standard motor oil used as factory fill with Ferrari cars. Would this be the best oil to use for the M5 ?
Thanks for your input.
PS The Ferrari technicians who work at my dealership, think it's superior motor oil, better than all other motor oil !