Ok im buying an 03 explorer sport trac from my uncle that has a 140000 miles on it. Hes used fram orange filter(i know junk ,loll) and valvoline dino since the first oil change. I plan on changing the filter to a mc 820s filter and maybe even switching to mc 5w30 blend. Will this be an upgrade? don't want issues of running syn and having it leak like my old truck did so thought the blend would be good. Also thought about pyb with the new gf5 rating. Any and all thoughts/selections would be greatly appreciated. Thanks guys.