Radiator Replacement in Vantaa

When a radiator needs replacing

A radiator is an aluminium-and-plastic assembly between the engine and the grille that transfers coolant heat to the surrounding air. Leaks most commonly start at the seam between the plastic top tank and the aluminium core, because differing thermal expansion fatigues the seam over the years. An older car at 10 years old may leak as a slow weep that dries during driving and doesn't show immediately — the only sign is a gradual drop in coolant level in the expansion tank. The leak leads to coolant loss and rising engine temperatures, especially under heavy load (motorway, inclines). The aftermath of overheating is a blown head gasket or a warped cylinder head, both thousand-euro repairs. That's why even the smallest leak should be fixed immediately. Cracked plastic top tanks and corroded radiator cores both mean the radiator has reached the end of its useful life.