I have a hard time understanding why anyone would deviate from what Ford recommends (see 5.4L issues with filters other than Ford)... Ford hires the best and brightest minds to engineer the crap out of these engines. I bought a high performance vehicle, and I expect it to perform that way. I don't believe that an A/M company will have as much access or data than the company that actually produced the vehicle... Correct me if I am wrong, and I would be more than willing to change my mind about following Ford's maintenance schedule.
Good point. I do think the factory engineers have the best knowledge to make the best maintenance recommendations.
That said, I think they make those recommendations based on what works for most conditions such as climate, duty cycles, normal wear and tear and operating cost over the life (or at least the warranty period) of the vehicle. I think they prioritize service based on “normal” operations for a given vehicle. Those norms may not be ideal for extremes such as racing or regular trips to redline or even long idle times (I noticed once I was sitting in a parking lot and after maybe 20 minutes or so I got a dashboard message saying the truck will turn off in 30 seconds unless I hit start/stop).
My thoughts are that while I don’t take my truck to the extremes all the time, it doesn’t hurt to change the oil more regularly. Could be I’m wasting my money but then again I waste money all the time in exchange for piece of mind [emoji41]