Hello together, has Mobil the quality of the Mobil1 engine oils deteriorated? On their homepage link, the 0w40 (New Life) and 0W30 only speak of SHC synthesis and to my knowledge this is not a “real” full-synthetic oil, but only a frozen conventional mineral oil (yes, I know, starting product is always petroleum i.e. mineral)Link are 1651 pages (author Star Doctor is interesting) I wanted to switch from Mobil1 0W40 to 0W30, but the 0W30 does not have any Are there good alternatives? What do you think of them:http://www.liqui-moly.de/liquimoly/produktdb.nsf/id/d_1171.html