Join Date: Aug 2015
Location: Pittsfield, NH, USA
As far as I know, the MTS and other recent models should be OK for this.
There are two plastics that the U.S. DOT allows to be used for fuel tanks: HDPE and PA6.
HDPE cannot be smoothly finished and painted, which is why Ducati (and others) used PA6 initially.
Unfortunately for them, one of the two government-mandated plastics (PA6) is not compatible with the government-mandated fuel with ethanol. Yay for government.
This is a problem with tanks that were made to be finished visually; mainly mid-2000's Monsters and Sport Classics. More recent bikes (M696, M796, M1100, HM, etc.) use HDPE for the tank material, and plastic covers for cosmetics. This has posed far less of a problem. I have not heard of MTS bikes having much, if any, of a tank expansion problem.
Don't blame this all on Ducati; the government made this far worse of a problem than it needed to be.
1993 Ducati Monster M900, 257K miles (so far)