This is off my 1993 Volvo 940 turbo,it has 145888 miles on it.Ive done 2 treatments of Auto-rx on it,is this iron anything to worrie about?After been here,I will be replacing this oil with something else.Anyway how does this look? ALUMINUM 4 CHROMIUM 0 IRON 18 COPPER 12 LEAD 3 TIN 0 MOLYBDENUM 12 NICKEL 1 MANGANESE 0 SILVER 0 TITANIUM 0 POTASSIUM 0 BORON 9 SILICON 13 SODIUM 3 CALCIUM 1124 MAGNESIUM 714 PHOSPHORUS 760 ZINC 903 BARIUM 0 SUS@VISCOSTY 65 FLASHPOINT 340 FUEL1.8 ANTFREEZE O WATER 0 INSOLEUBLES 0.3 I allso used about half gallon of fp-60,in about an year .They said next time run the car about 15 min down highway to because of the fuel.