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Here are the results from my latest and past 2 UOA's. I am happy about the drop in copper but a little concerned about the rise in Chromium. Any input reguarding my #'s would be appreciated. I drive this car hard. It sees WOT in first and second gears daily. I am using a stock paper air filter...

Oil Type Castrol 0w30 / Mobil 1 5w30 MI/HR on Oil 5,000 / 5,000 MI/HR on Unit 28,000 / 23,000 Sample Date 12/26/07 -1/28/2007 Make Up Oil .75 qts /.75 qts ALUMINUM 6 / 7 CHROMIUM 1 / 1 IRON 24 / 26 COPPER 87 / 83 LEAD 7 / 6 TIN 1 / 1 MOLYBDENUM 15 / 80 NICKEL 2 / 2 MANGANESE 1 / 1 SILVER 0 / 0...

Here are the results of my first oil analysis. I stumbled across this board and was hooked. My GTO has 23k miles, I have used Mobil 1 5w30 for all previous oil changes, Stock Air filter, Purolator Pure 1 oil filter. I am giving Gold German Castrol a try for my latest oil change and will run an...