K&N filter @ 60k / M1 filter @ 55k
Alum 2 2
Chrom 1 1
Iron 20 15
Copper 2 2
Lead 1 2
Tin 3 1
Moly 72 53
Nickel 1 0
Manganese 0 1
Silver 0 0
Titanium 0 0
Potassium 0 0
Boron 134 123
Silicon 7 9
Sodium 6 5
Calcium 2809 2744
Magnesium 15 16
Phos 709 704
Zinc 905 865
Barium 0 0
Fuel Antifreeze 0 0
Water 0 0
Insolubles 0.4 0.4
Nothing unusual in this second sample from your Pontiac. Wear was low compared to averages for this type of engine. Iron was up a little from the first sample but only to an average level. WE found no fuel dilution, moisture, or any signs of coolant contamination in this sample. Air and oil filtration were functioning normally while this oil was in use. In short, everything looks good in this sample and we have no problems to report for your engine at 60,000 miles.
My take: A few things were a little higher with the K&N filter than the Mobil 1 but could be within normal variance. Both had 1/2 qt added over 5k, though Blackstone says 1 qt
[ March 12, 2004, 06:49 PM: Message edited by: JohnnyO ]