Quote Originally Posted by kisshmet View Post
It's not doing any good..dagdag trabaho pa yun sa kanya para maibalik

Sent from my SM-A520W using Tapatalk
Right on the spot! [emoji3]
Quote Originally Posted by ice15 View Post
it's 1 less thing to worry about. without it water pump na lang and pwede masira (granting di mabutas yung radiator, hose and tumigil yung fan)

those times when the car overheated pero ok naman lahat... thermostat did not open
What could be the reason why the thermostat got stuck?

You mentioned about optimal temperature so yes, thermal efficiency will suffer. In effect, poor fuel economy. However, I don't know by how much and it might be negligible.