Part of my master plan is to use the first year as a shake down period for the car. i.e. - catch up on deferred maintenance, fix whatever random (hopefully minor) stuff that pops up and get a baseline for engine health. Here's how it's gone so far: I've already described the deferred maintenance and random fixes here . By the time Christmas rolled around, I'd put around 5000 miles on the car. That's only half of the Porsche recommended oil change interval, but I was curious about the condition of the oil and one of the local dealers sent me a coupon. The dealer hooked me up with a Blackstone oil analysis kit & I sent of the sample the week after Christmas. The results looked great. There was no contamination of any sort and the metals look good compared to the universal averages at 3900 miles. Based on the results of the test, I'm going to try a longer interval and it's nice to see that my IMS bearing is in good shape.