You folks go on about how high priced an oil change is for the Crossfire. You folks ever think about not using Mobil 1, you know you can flush your engine and replace the synthetic type oil with a high end oil. It's not like this 3.2L is a really high performance engine, the compression is only 10.1. In the old days we never had synthetic oil and we were running engines with 11.5 - 12.1 compression, 98 octane, 365-427 hp, 4.10 rear ends. The oil we used was just fine. There are oils that will sludge up on you, but we knew which ones not to buy. I'm looking at flushing my engine an replacing the synthetic oil with a high end oil, if i ever get pass the 7,000 mile mark, so far since September 2005 I'm still below 1,700 miles.