Wear metals in the oil indicate wear in the engine, not breaking in at 35,000 miles. 350 miles, I'd call them breaking in, 35,000, definitely wear.

I'm curious about the calcium, though, along with the zinc. I wasn't aware that Amsoil synthetic contained zinc stearate -- I know none of the full synthetics do. Its this particular formulation synthetic based or petroleum based?

Lead (Pb), copper (Cu) and tin (Sn) are from the babbit on the bearings -- if these numbers are elevated (yours are not) it indicates bearing wear.

The phosphate is from the polyphenyl phosphate detergents in the oil additives.

Soot levels are good, so you won't need to change the oil because the soot level is too high.

Check the formulation -- if Amsoil 3000 series contains zinc stearate, I'd switch to another synthetic oil that doesn't have it -- prevents ash buildup in the combustion chambers, as zinc stearate is the source of ash. If it isn't synthetic oil and you have the FSS system PUT SYNTHETIC IN IT!!!! FSS and extended service intervals results in excessive (terminal!) engine wear in short order on dino oil.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!