The Frequently Quoted “Taxi Study” SAE 2005-01-3818

I get the point of the study, but without a comparison to oils with higher hths it really doesn’t do anything for the thick vs thin debate.
While I think it does get blown out of proportion, I think most people who are on the thick side just want less wear, and for their engine to perform at optimal levels for longer, whether they keep it until the wheels fall of or not.