144,646 miles on vehicle.has had redline oil since 100,000miles-changed every 90 days with 5000-6500 miles on oil-factory oil & air filters-used Mobil 1 from 21,000 miles till 100,000 miles at 5,000 intervals.
al-7
chr-1
iron 19
copper 2
lead 10
tin 0
moly 376
nickel,mang.,silver,titanium all...