This was run between 2,500 and 22,400 miles in my Forester's 5-speed manual transmission. Viscosity was flagged. This was a Wix prepaid analysis kit. There was a bit of black sludge on the magnetic plug, but nothing that I haven't seen before. I didn't see anything shiny on the plug or in the oil. I'm concerned about the level of iron, and the viscosity is obviously low. Thoughts? I refilled it with the same, but maybe I should switch to something else.
Oil Valvoline Conventional 75w-90 GL-5 Miles on Oil 19,900 Miles on Car 22,400 Sample Date 7/7/14 Aluminum 11 Chromium 2 Iron 119 Copper 6 Lead 0 Tin 0 Molybdenum 0 Nickel 0 Manganese 0 Silver 0 Titanium 0 Potassium 6 Boron 358 Silicon 24 Sodium 3 Calcium 84 Magnesium 0 Phosphorus 1808 Zinc 197 Barium 0 cSt Viscosity @ 100°C 10.9 Water % <0.05 Solids % <0.1 TAN 2.97