So i have decided to transfer schools to Kansas City to pursue a career in oral surgery meaning that i will be moving from Wichita to KC coming August. To do this I am planning on selling off my tiburon and b4000 to get a more highway oriented vehicle. Probably in the neo luxury sedan (avalon, azera) or optioned out mid size category. This vehicle will most likely be specced for 0 or 5w20 with probably a 5 or 6 speed transmission and 90% of the driving will be on the turnpike sitting at 75-90mph. I plan on using a premium oil most likely Amsoil signature. So one, with a premium oil and almost all highway miles at a relatively fast speed would using a 5w30 be beneficial in this case? Two, what other oils would you guys recommend for this application (including weight) and three what vehicles would you recommend for this application? Probably going to have around an 8k budget.