The biggest issue, in regards to this discussion, is that there is a huge amount of leeway for lubricant selection. In industries, there is no such thing as a cleaner/lubricant, you degrade the performance of either when you combine both functions. Motor oil does have a dispersant to carry carbon particles to the filter, but it is certainly not a cleaner. Because lubrication in firearms is much more forgiving, compromises are made and the results are rarely seen.
I have worked in heavy industry for the past 12 years, maintaining lubrication systems on mining equipment that weighs in excess of 4,000,000 lbs. I hold current certifications with the International Council for Machinery Lubrication (ICML) and teach lubrication principals internationally.
In firearms, all that technical stuff doesn't add up to much in actual application. Lubricate the components with something, anything, under casual conditions, most won't know or see the difference. An example of that is found in this thread, a few people impressed by Fireclean and one person is apparently very committed to an oil/gasoline mixture, if that discrepancy isn't crazy I have no idea what is.