That just happened to be where I found the MSDS. I would think it unlikely that he would falsify an MSDS, but I suppose requesting one from the manufacturer would be prudent. Interesting though, what we dump into our fuel tanks sometimes.
I read on one of the K-bike sites that the rubber fuel tank mount can degrade over time, so you might want to check that. I use ethanol, but have only about 30K miles on my bike. The mount was OK when I checked it a year ago. IIRC, the replacement mount has been upgraded to be ethanol resistant.
Hope this helps.
'92 K75S, '08 F800ST
Cedar Falls, IA