Bought an ACDelco 12R18 from rockauto for my Corolla, I was thinking that since GM also rebadge Corolla it would throw in a Denso radiator cap or something like that. End up with a Made in Israel, Motorad look alike radiator cap. The label on the cap is yellow with black writing and a red M that looks nothing like the catalog photo (Japanese, English, and Spanish on it). How good are Motorad non failsafe cap? I know they are probably ok for thermostat and their fail safe caps are not BITOG favorite.