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Bearings, bushings, valve guides?
Iron could also come from the crank.
Iron could also come from the crank.
But, can come from the pistons. Although, I seem to recall that they have a tin coating.I wouldn't think the aluminum is coming from there
I never really looked into it. But, it appears that you are correct - somewhere in the 600-1200ppm range.From what I gather Toyota oil has a boat load of Moly in it
Makes this look even more attractive for SuperDave, where the Moly level appears to be in the 800ppm range.The Chrono would line up w/what you're currently using. Fully synthetic, w/alot more Moly (10x more than US Castrol Edge).