I can't fault your thought process or what influences you.Indeed not. I use the lubricant that features the loudest/most colourful advertisement.
Or scantily clad wimmenz.
Further, regarding grade: I use data, factual and anecdotal, from the 1940's and 50's. Therefore, I choose a straight grade such as SAE 50. "If it's good enough for the Pratt & Whitney Double Wasp then it's good enough for my BX23S lawn mower."
Yeah, there was nothing weird about an old guy taking photos of a poster in a boat dealership. What a loser!
