Simple gifts: It's for a '92 Buick Roadmaster, and I disagree with you, as I don't believe SN is as good as people say it is.
Char baby: first off, good to hear from you. Second, in the days of SJ Kendall wasn't owned by Phillips. The oldest VOAs I've found on here are for SL, Phillips Kendall.
AGS: I do appreciate the PDS for the current Kendall. I've viewed the PDS for the current Kendall Competition GT-1, and if I was looking for a modern 20W-50, that would be the one.