Quote Originally Posted by kinyo View Post
^ good suggestion ... radiator cap leaks are not so obvious and can only be seen/heard under close observation when the engine is hot ... and this could be the reason more and more recent model cars don't have it anymore

i had this problem just weeks back (in fact, i posted it in here also). just bought a new radiator cap this week lang and based on my observation, hindi na nauubos yung laman ng reservoir ko.

try mo muna palitan yung radiator cap mo, and observe, if it is still the same, there may be underlying causes.

muna lang naman radiator cap.