I just bougt a 07 800 s2r with 4500 miles and when I use the front brake It makes a winding noise almost sound like a locus bug. does anyone know what it might be there is no vibration and every thing works fine. also i just moved to texas and its quiet hot here so I think im going to run 20w/50 weight oil in the summer what oil are you guys using I use castrol actevo x-tra 4t part synthetic in my other bikes should I use something else for my monster.
The brake noise is probably just the drilled rotor and is normal. You're better off with a full synth oil, regardless of what Castrol says. As for oil weight, go with what the manual specs; if you didn't get one with the bike:
http://www.ducati-manuals.com/2012/07/ducati-monster-s2r-800-2007-owner-manual.html (http://www.ducati-manuals.com/2012/07/ducati-monster-s2r-800-2007-owner-manual.html)