Found this interesting article on Blackstone Labs site.
https://www.blackstone-labs.com/wp-content/uploads/2018/09/Aug-17-ENG.pdf
https://www.blackstone-labs.com/wp-content/uploads/2018/09/Aug-17-ENG.pdf
The only TRACEABLE lubricant-related maintenance issues or malfunctions/failures I know of were a consequence of the lack thereof (of lubricant).The oil level rather than the oil brand is by far the most important element with respect to engine wear.
PaddyD,Well, I currently have a sample of Motul 7100 10w40 at Blackstone awaiting testing.
, but if the Rotella turns out to be even slightly above average I'll probably continue with it if only because at under $20 per gallon I can afford to dump it every 1,500 -2,000 miles or so. I think my owners manual called for a 7,500 mile interval, but to me that's a lot of use for 2.2 qts of oil in a motorcycle. I'll let you all know how the Motul tests when I get the report back, but I won't be spending $45 per gallon again on oil. I just can't force myself to leave it in long enough to make it cost effective.
...If I knew how to post it up I would,...
Correct; the idea that oil deteriorates from sitting is something that the automotive industry has planted in our heads to help sell more service appointments. My Jaguar has a 16,000 mile oil change interval.....OR one year whatever comes first. So far it has had the oil changed every year for the past 4 years and I have a total of 11,000 miles on the car. Last year I put just over 1100 miles on the car and dutifully took it in for it's annual oil change. You'll never convince me that there was anything wrong with the oil with 1100 miles on it though.....So how does synthetic oil or even conventional break down while it sits? I don't believe it does, anymore than you have a jug of oil sitting on your garage shelf and you don't throw it away if you haven't used it in a year.