Anyone use it and results? or the rotella15w40? ride a 06 speedie w/865 engine and thinking about using it.Know there used to be some talk on here of the rotella but haven't seen any in quite a while. Have only ran synthetics(mobil, amsoil, & castrol on this last change, seemed to get a lot more topend noise w/ the amsoil) & only have 13,000+ on the odometer.Change oil every 3000-3500mi. Know can go more but just personal preference. Would like some feedback. Not trying to start a pissing contest,as most oil questions turn into, just want some feedback from users. Live in ok,(aka hotter than hell). Ride yr. round.Thanks for all responses.
