When we first purchased the TSX, I immediately did an oil change with Mobil 1 Extended Performance 5w-30 and the Mobil 1 M1-110 oil filter. About 3000 miles later, I did another oil change with the same materials. I realize that the service interval is 10,000 miles/1 year but I had no idea about the condition of the engine internals and wanted to rest easier knowing there was clean oil in there. Around this time (Dec. 2010) I began seeing commercials for Pennzoil Ultra. The commercials showed visual comparisons with Mobil 1 and always played up the "only motor oil exclusively recommended by Ferrari North America". Their marketing was flawless and so I decided that the next oil change would be with Pennzoil Ultra.
Being the scientist that I am, I wanted to gather some empirical data of my own to verify Pennzoil's claim. After running the Mobil 1 for 3,050 miles, I decided to do the oil change and send the used Mobil 1 off for analysis. Analysis came back and everything looked good, including the recommendation to put more miles on each oil change. So, the oil was changed with Pennzoil Ultra 5w-30 and I used the same Mobil 1 M1-110 oil filter. However, I did not have the exact same driving conditions as with the Mobil 1. First, I took the recommendation and decided to put exactly one year on the oil change, which ended up being 5,562 miles. Furthermore, as mentioned above, I began autocross racing. Therefore, the engine was abused A LOT more. I sent the used Pennzoil Ultra off for analysis and the results are in. You can take a look for yourself.
