Hi I have done a fair amount of research on this and from personal experience would concur with what the guy said the oil film you mentioned is in fact physical but there is contact which is why some engines with middling milage I have worked on knock when being started from cold this is through naturally occurring wear on the bearings which would lead one to believe that due to poor maintenance or low quality oil even some being how far they can go after the service due message comes on, as far as I can see given some of the parameters mentioned stop/start would merely accelerate the wear process, as for the lubricants they have been selling advanced oils for years but most of these are sold at a premium and contain PTFE same as the Slick 50 Kev mentioned, reading between the lines car producers are not necessarily worried by problems that occur outside the warranty period as in the case of Audi who are quite happy to sell you a short engine for £5000, but in saying that why are they so suddenly interested in beefing up con rod bearings, someone somewhere is having problems inside the warranty.
Steve.