Hey guys, don't hate on me too much for starting another oil thread. Went to the local parts store to pick up some Rotella T6 as that was recommended in another thread that I was browsing, but they only had it in 5w-40. The vehicle mainly lives in the desert area between Riverside, CA and Las Vegas. I don't know enough to know if that will suffice for the conditions that I drive in. Can one of you fine gentlemen point me in the right direction please? The truck will be deleted here in a few months, and I plan on doing another oil change just after the deletes. Thanks!