I'm a big believer in Oil Analysis (at least once a baseline and trend for that unit is established), dating back to my marine diesel experience.
However, once in a while it throws-up stuff that makes you want to.. erm.. throw-up.[You must be registered and logged in to see this image.]
It looks like the Copper content is extremely high: it was outside of limits when I first had the oil checked, about 380 miles ago. I did not
change the oil after that,
so both these analysusis reports are on the same oil. I have changed it (and the filter) now.... I'm using Motul 10W/60 Synthetic (the red stuff).
A bit of background: I'm the 3rd owner of this 1100 2V. Its had a pretty easy life I think: the first owner took care of it pretty well,
the second was a Harley Dude who recognised his mistake after 3 months and moved it on to me 2 years ago, at 5054 mls.
No engine problems at all, except
: I overheated the bike a year ago, stuck in Daytona Bike Week traffic. Pegged the dipstick gauge. A Red Oil light came on (pressure, temp ?) and I shut it down immediately. After I spent an hour ogling the other bikes, and the coleslaw-wrestling girls, everything was fine. And no issues since. I thought I might have fried the oil, so I had the first analysis done.
Blackstone are a well-respected oil testing labs, but probably don't see many Guzzis (hence the comment about engine/transmission shared oil).
My best guess at this time is either a bronze thrust washer (or similar) in the valve train, or the Oil Cooler might be leaching copper after the overheat.
Either way, I'm not planning a teardown just yet, but I could use some help - especially from Roper-san, who has stared into more Guzzi innards than I've had hot dinners...