I sent an oil sample off when my ST1300 turned over to 400,000 miles (discuss that over there) and on the sample report it's a bit not what I expected. When I first got the bike new in 2009 at 2,000 miles I went to Rotella T6 oil which I had been using for years in my old Honda Valkyries. Back then Rotella "kind of" said it was OK to use in motorcycles. Then in around 2016 17? they "changed the formula" to what I don't think anybody knows for sure but the motorcycle endorsement "kind of" went away. It still lists JASO MA and JASO MA2 on the label. No need to discuss the validity and certifications just we know it is there on the side of the oil containers.
Many people said the oil was no longer safe for wet clutches because they up'd the moly content to 68ppm. I kept on using as I didn't think that was too much for the clutch. So why is my report moly number only 1ppm? And I looked at another bikes oil report and it was only 4ppm using Rotella. I was surprised to see the number so low. Why isn't it 50 to 60ppm?
I don't see anything bad other than the low viscosity a bit below desired and that is probably because of my 10,000 mile oil change interval. Also comparing my bikes engine condition per the oil report, man I'm impressed! This ol Honda engine is long wearing machine.
Other bike report I found has numbers higher on many things.

Many people said the oil was no longer safe for wet clutches because they up'd the moly content to 68ppm. I kept on using as I didn't think that was too much for the clutch. So why is my report moly number only 1ppm? And I looked at another bikes oil report and it was only 4ppm using Rotella. I was surprised to see the number so low. Why isn't it 50 to 60ppm?
I don't see anything bad other than the low viscosity a bit below desired and that is probably because of my 10,000 mile oil change interval. Also comparing my bikes engine condition per the oil report, man I'm impressed! This ol Honda engine is long wearing machine.
Other bike report I found has numbers higher on many things.
