i also agree with running a good quality filter as well as a good quality oil. this doesnt necessarily mean run synthetic, and doesnt mean if you do run synthetic to run something as expensive as royal purple. although some other brands like pennzoil and mobil one are equal if not more in price to royal purple.
I've been running valvoline synpower 5w30 in my 97 302 for as long as i have had it. it is my daily driver and use to see daily interstate trips of 50+ miles. I wanted a oil that will hold up for an interval of 5-7k miles before a change. i immediately noticed after running the synthetic oil that my oil stayed cleaner longer and i lost less oil between changes. synthetic oil is expensive nowadays, and to be honest, if im a quart low i usually grab a cheaper synthetic blend like max life or motorcraft top off. every few months valvoline synpower goes on sale, at either a buy one get one price, or a reduced price for 5qts and a filter. when this happens, i stock up. i have had a great experience with this oil.
now my 93 on the other hand, with about equal mileage, isnt my daily driver. im not saying that bc i dont drive it as often that the oil shouldnt be changed regularly bc it should, bc of condenstion and things from sitting. i wont however run $7 a quart oil in it. about a year ago i got a really good deal on about 8 purolator pure-one 3001's so it does get a good filter, but as far as oil, i usually stock up on max-life 10w30 when its on sale, i have noticed an advantage from using this oil over conventional valvoline.
this is all personal opinion, and each owner has a different metod/philosophy when it comes to oil, i just thought i would share mine.
p.s. ill say this once again, Fram filters are junk.