Under ideal conditions dino oil can make 10,000 miles in later MB engines. BUT under most conditions its life is done at 5-6,000 miles. THE FSS program is set for a minimun of 10,000 miles & MB realized that dino can't make it that far.
OF course the biggest problem is that MOST people wouldn't service the car at the MAX mileage(FSS light) but would run over by 2-3,000.
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)