I thought the article was very factual. It seems that a lot of people are taking a few lines out of context and misinterpreting its meaning. The fundamental principle in the article is that the 3000 mile interval is no longer valid. BTW, i remember the days of the 1500 mile oil and lube intervals, I don’t see that advocated anywhere anymore, but it took a long time to die as well.
I’m not sure I’m ready for a 20,000 mile interval, though I have to admit that there was a time I did that, once. My last two years in the Navy, I was assigned to a boat that was about 900 miles from home. I was not going to move my family for a two year assignment, especially when I was gone most of that time. On every weekend that I could get away, I drove home. That did not leave time for oil changes, but I used Mobil 1 and it was all highway miles. That was a 79 dodge Colt with over 100k on it, the engine ultimately went to 180k before the car got totaled in an accident.
But even that article was not advocating 20k intervals, only mentioning that Porsche had that as an interval. Almost half the manufacturers use oil life monitors and they seem to be working just fine. In absence of the OLM, the rest are using 5k for conventional oil and 10k for synthetic. I think those are reasonable.
On my vehicle without OLMs, I have been using synthetic oil and a 7500 mile interval, so far that has worked out very well. My two current vehicles w/o OLMs have 180k and do not burn oil. My Saturn with an OLM has 254k on it. When I used synthetic oil in it, I skipped every other oil change light, so my oil changes were 11k apart. when I went back to conventional. I change at the oil change light which is about every 5.5k miles. so far, so good.
BTW, when Mobil 1 first came on the market, which was back in the days when many people still held onto the 1500 mile interval, they did claim it was good for 25k miles. They backed off that claim a short while later. The early Mobil 1 also had issues with older cars because it leaked readily past their seals. It got a bad rap for awhile. At $5/qt when conventional oil was only about $.45/qt and discount oil sold for less than $.25/qt, it was a hard sell to begin with.