The Toyota allowed about anything bottled from a 20 to a 20W-50 depending upon temperature and use...300,000..still in use
Cavalier called for 5w30...207,000...still in use
Silverado called for 5w30...4,850...still in use
Pontiac called for 5w30....36,000...still in use
Pontiac van called for 5w30...170,000...traded this year
Jeep called for 5W-20...6,200...still in use
Chrysler just traded called for 5W-20...190,000
Ford called for 5W-20....7,000...still in use
Saturn called for 10w30...144,000...still in use
If I go back to 1990 when I started to use M1 15W-50 in everything, there was a Volkswagen, Mitsubishi, Kia, Daewoo, Camaro, Pontiac Grand AM, Corsica, Beretta, and a Neon. All had well over 100,000 except the Mitsubishi totaled at 62,000 and the Daewoo traded after third transmission replaced. The Beretta and the Neon had close to 200,000.
If I could find a 10w30 grade oil that had a 100C cSt of 12.4, MOLY but less than 100 MOLY, Boron but than 100 boron, 2500 calcium or better, a heavy FM package, I MIGHT consider it. I can easily get that and more in a custom blend but I would rather not.