I tried a number of the now-defunct oils in that article, including EON (a diester) and ALL-PROOF (a polyolester).Mobil1 5w20 (the only flavor they had then) in 1977 or 78. Lawn mower, and '57 Chevy.
[URL]http://books.google.com/books?id=FAEAAAAAMBAJ&pg=PA90[/URL] was the big influence.
I have an unopened can of ALL-PROOF in the garage.