Your insane if you follow that OLM. You people really take following directions like Lemmings. Seriously, you can get oil cheap, change oil yourself and you are still going to let a monitor control when you change oil,I have to question that OLM. I think it's Bull. My assessment, its for dumb people, to lazy to actually establish a maintinence program. I can tell you I do everything to qualify for super severe service at 5000 miles, I am still at 50 % life. You all put to much faith in some therory based mechanical engineer. In my vehicle, I play it safe, oil is cheap, filters are cheap, takes 15 minutes. 5000 miles max. Regardless, on all vehicles. That's my maintinence program and it always worked well. 193,000 miles and oil stays clean and doesn't use a drop between changes.