Jeep Riot has it correct. For perfect results, it's so straightforward:For the life of me, I can’t figure out why someone would skip changing the filter at the time the oil is changed. Please don’t even try to explain it to me. I still won’t understand.
1. Oil and Filter at every change
2. 5,000 miles Interval.
3. Manufacturer recommended oil specifications. Premium, ultra premium oil is not important, but avoiding questionable, no-name oil is. (I offer this name for this rule: "Quaker State or better.")