Originally Posted by badx33
does this provide any cooling upgrade?
i don't know the professional terms to describe my personal experience, but when i had the stock cap
on my IS350 and took a long distance drive going to Vegas from SoCal (while beating on it consistantly), the radiator fluid somehow overflow/leaked out from the cap (i checked it @ a gas station when i got to vegas).
then on the way back I installed this Blitz radiator cap (not the brand new one I'm selling here), and the fluid never leaked out since then till the day I sold the car!