Use windex if it helps.
if have scracthes you can use jewelers rogue and lot of elbow grease.
If hazy hazy over time, then rub with rubbing compound for car polish and then scrub off with nice and tight hand.
There are only 2 possible ways: Either you spielled while top up or a hose/pipe/cap leaking and spraying it out under pressure onto the ECU box.
Very weird and never seen or heard one.
what is the actual life of radiator, as my car is slightly overheating in traffic only.
Some friend was suggesting radiator change, and some mechanic is saying something else. So i need a second opinion that in 4 years old vehicle with 78k kms is radiator change is recommended or it cud be something else wrong somewhere?