Rotella is JA motorcycle rated per the manufacturers
I never said it wasn't. I am not commenting on any particular oil. I am commenting on the "study" done that compares nothing and doesn't take into account that all oils lose viscosity as it is used and breaks down. The engineers who came up with the specs take all that into account. Pick a quality oil and be done with it. The Internet is replete with horror stories or "information" regarding the suitability or unsuitability of oils, filters, you name it and the majority of said information isn't worth the price of the paper it is written on, and since it is on the Internet and not actually written on paper, it must not be worth much.
Buy oil, buy a filter, drain your oil, remove old filter, install new filter, pour in new oil and ride. Repeat as necessary. (This doesn't mean every 1500 miles.)
Someone here once said he changed his oil every 1500 miles. If I did that there would be times I would change the oil every other day. On one trip I would have changed the oil after one day of riding.
Don't get me started about the old thread wanting people to send their oil in for analysis. This is simply hypochondria for motorcycles. Seriously people, the manufacturer actually knows what they are doing when the recommend oil, filters and oil change intervals. The engine will last a long time without horrific catastrophic damage due to using ordinary motorcycle oil that meets the manufacturers specifications.
(Is the a stepping off the soapbox emoticon anywhere here?)