IMO using the OLM as your guide for oil changes is dangerous. If you are going to keep your vehicle for 50 k , no problem, but if you intend to keep your vehicle 100k or longer think twice. The OLM and extended oil changes are EPA driven. Oil is cheap, engines aren't. I have this opinion as a 28 year service and parts rep for one of the big three USA automakers. 15 years ago, I bought a used Riding lawnmower from a retired chemical engineer who worked his career for oil companies designing additive packages to take base stock oil to whatever the oil company wanted. I realized that he knew a whole lot more about oil than I did. Here is what he told me. If you use conventional oil do 3-5 k changes, synthetic 5-7 oil changes. Shear is the enemy of oil and viscosity degrades rapidly. Also he said you get what you pay for with motor oil. Buy cheap oil and you get what you pay for. He suggested that you but name brand oil, Pennzoil, Mobil, Valvoline etc and change it often. He also told me to never add anything to the oil, by doing so you degrade the additive package. Through the years they checked every oil additive and none of them did what they said they did. I know that many of you will disagree with me. That's ok, everybody has an opinion. I don't simply have an opinion, it's backed up by real world experience, I've seen it all in 28 years working with dealer service departments. BOTTOM LINE, like I said oil is cheap, engines aren't. Remember the Fram Man, "you can pay me now or pay me later".