Vavoline or Castrol 10w30 in the winter, 20w50 in the summer, it was what my HS auto shop teacher recommended in the mid-80s. Later on, I stuck to manufacturer recommendations, with 80s/90s Japanese vehicles, things seemed notably sluggish at anything below 70F with 20w50.
Found BITOG about 17 years after I started driving, around 2003, only a couple of years after the last of my carb vehicles were gone. I had expanded to using M1 by that time, because I had a 2000 Ford F150 and I didn't want any mechanical issues because owning that pickup and a house was stretching me a bit thin at that point in time. Changed it every 3K like I learned to do when young. Through BITOG and UOA I learned I was dumping perfectly good oil. I tried Chevron 10w30 also thanks to BITOG, it was $1.07 a qt at Walmart vs over $4 for M1 quarts, and got better UOA results with that Chev 10w30 on a 5K OCI than with the M1, so I switched to that even though the Ford recommendation was for 5w30. Thus a long history of running non-spec oils started
Always ran Wix filters from the 80s until the mid-00s, when I got the aforementioned Ford I noticed how cheap the Motorcrafts were at Wallyworld, and they had a silicon ADBV. Saw a Fram cut apart in the 80s, was a Purlator ad basically showing both at the parts store. But I always bought Wix because my shop teacher liked them.
Then when I got a Kia in 2006 I started running their filters because they seemed quieter. After seeing Fram Ultras cut open on here, I finally tried one on my 2012 Sonata and it was very quiet, plus seeemed to keep the oil cleaner longer.
Now I'm running a Supertech MP on the Lincoln and an Fram Endurance on the Mitsu. I will run both filters out to their rated mileage, although I change oil from my stash at no more than 5K because a) I have way, way more than I need and b) I got it super cheap so short OCI is of no concern to me. Running 2017 dated 10w30 Chevron ProDS in the Navi and 5w20 ProDS in the Mitsu, why, because I bought 29 jugs of it in 2017 at $7.17 a jug. I still have quite a few jugs after 6 years. The thread is on here somewhere, but I don't care enough to go find it.