I'm probably overly anal about oil type, oil filters, and oil change intervals, and I don't think that a few extra bucks for an oil change is really much of a concern when you are considering protection of your engine. I spend a few dollars more for my motor oil and filter and always get excellent performance and longevity from my Lincoln Town Cars. I consider oil, oil filters, and oci ito be d***ed cheap insurance compared to having to have an engine changed or (God forbid) buying a new car~!!. Light weight 100% synthetic oil and the best filter every 10,000 mile has served me very well for many, many miles and several cars.