In browsing the Amsoil website I noticed the Series 2000 0w30 is said to meet the MB 229.5 spec yet the information I received with my 2006 Benz makes no mention of Amsoil products in the "approved lubricants" brochure. A call to the Mercedes-Benz tech line also revealed that Amsoil is not on their list of approved lubricants. The only 229.5 oils I can find here in the states is Mobil 1 0w-40 and one grade made by ELF. I have a quart of Mobil 1 to use for top-offs but would like to know of other alternative oils. Please comment. Thank you!