In the USA, Mobil 1 furnishes two types of "European Car Full Synthetic" that meet Mercedes specs. If you go to Get up to $30 back on Mobil 1™ motor oil and Mobil 1™ – Terms you will find the details of how you can buy two five-quart jugs for $22.37 each at Walmart (online, with free pick-up at your local store), then get two $10 rebates.

$2.50 a quart for Mercedes-approved full-synthetic oil ain't too shabby...

 

Yup, every year they run the promotion.... 0W-40 for me.