I began using Mobil 1 back in the early 80's on the advice of the great Frank King who was the technical director of the Mercedes Benz club for decades. I used it in my 190D for 18 years and when I sold it that engine still got over 4,000 miles on a quart of oil.

I've used Mobil 1 in my 300E for 13 years and the engine uses less oil than any car I've owned in the last 50 years.

I've used 15W-50 Mobil 1 in Minnesota winters and in Arizona summers. 0W-40 Mobil 1 can be used in ANY modern Mercedes Benz gasoline engine and 15W-50 can be used as well, even in FSS systems.

Synthetic oils may have lower pour points than Dino oil but they are not *thinner*. I used to be able to pour 15W-50 Mobil 1 in my garage in the dead of a Minnesota winter but it was never *thin* even in an Arizona summer.

The comment attributed to George Murphy doesn't surprise me. When Frank King passed away, I quit the club.