Big Jim, you continue to disperse your oversimplifications and do nothing to learn the truth about engine oils. All one has to do is plug in the words engine oil or something similar and do a search on-line to read and learn about engine oils.
Just FYI, I do not have TV service! When I moved to NW Colorado I intentionally didn't hook-up the TV cable; I have significantly changed my lifestyle. I've too many projects I'd like to complete and prefer reading biographies of American Patriots while listening to classical music when I don't feel like working.
If you do check out fundamental information about engine oils, you'll read about different standards for oil; the standards that each manufacturer must meet to label their product(s)' shipping containers. Some companies sell products that do not meet the certifying agencies' standards and engine manufacturers' recommendations. Some enine oils are better than other engine oils for certain types of engines and operating conditions. Almost all engine oils are similar, not identical or the same! Additives are significant to the engine oil's ability to protect your engine. Additives in engine oils are a small percentage of the total product's composition, but actually do play important roles improving viscosities, neutralizing corrosive acids leaking into the engine oil from the gaseous fireside of combustion engines, sealing the engine oil side of the engine, to just name a few of the major functions of the additives.
Similar in function, some better than others for specific applications ... don't use your regular brand 10w-30 for the CJ7 in your high performance motorcycle!