I finally found Lubro Moly in Vancouver, BC Canada at www.hopefungautoparts.com
I find most Lubro Moly products sell in USA, but not Vancouver area. Today, finally find that kinds item.
I used 10W40 super motor oil (mixed MOS2) for my 87 MB 190E and use Air Intake cleaner to clean idle control valve and air flow meter. After used that, car runs more smooth. Highly recommented.