2010 3.8 Track. 204,xxx miles now. Original engine, transmission, and clutch.
Since everyone loves to hate on slightly longer oil change intervals, Walmart's SuperTech brand oil, and plain old Fram filters, I decided to do a test and get empirical evidence to see how well all of those factors together would do in my 200,000+ mile BK1 3.8. Judging by the results, I must be doing something right.
My vehicle sees tons of usage at relatively high speeds in the Texas heat, with a WOT pull to the redline daily. This sample also saw extended periods of high speed driving through the deserts of New Mexico and Colorado, with a trip to the top of Pike's Peak, and extended periods of idling as I slept in the back overnight on a road trip more than once. Apparently it is time for me to clean my air filter again (oops) due to the rising silicon content - I guess it has been about 21,000 miles now that I think of it. This may have slightly elevated the wear metals but nothing seems out of line so I will just clean it and drive on.
Top picture is the most recent oil analysis result with the SuperTech Synthetic 5w20 and a Fram filter. I have labelled the rest on the bottom for easier referencing and comparison. Universal averages are based upon 6,400 miles of usage in the 3.8 engine. The bottom picture is an oil analysis I had done over 100,000 miles ago using plain old Mobil 1 5w20 and an OEM filter - I wanted to directly compare the SuperTech synthetic 5w20 to the Mobil 1 5w20 to show it doesn't have to be name brand to perform just as well, and I got the mileage of the samples as close as I could while being feasible for my schedule.