Was at meijer ( dont know if you have any local) they had th Maxlife there for $17.xx / gal. I used it ( 2 D&F)and now have 2k on it, feels about the same as before maybe a little smoother. My moms sonata( same car as the kia, diff badges) only did 1 d&f , feels great. Good luck on the decision, i too was fretting the decision. I think BITOG has turned me into a paranoid, OCD backyard mechanic. I was happier when I was less informed
. I guess ignorance is bliis! I dont think you will go wrong either way. Happy trails
