*sir huzky
agree with sir shok, you can follow his advise to try diffrent combinations in each panel. you may want to do,
roof - kaio > ksg (para durability against sa sikat ng araw)
hood - kaio > bfwd (para kitang-kita agad sa harap yung shine

)
side panels - kaio > 845 (or put the 845 sa hood)
then compare after each wash and days/weeks past kung gaano katagal ang bawat combination. afterwhich kung madetermine mo gaano katagal ang proteksiyon, kahit anong combination ang gamitin mo alam mo na kung kelan ka ulit mag-re-apply.