Hey guys need some insight. I got my suby a couple months ago so this is the first time Im gonna change the oil in it. Im gonna use synthetic oil but what would be the best oil and oil filter for the 07 wrx with stg 1 setup? Ive asked a few people around town who know subys but each has something different to say, so thought I try here, so what do ya think??? Valvoline, Halvoline??? OEM filter, subaru filter??? Does it even matter?