2003, C230 Kompressor on coolant tank, where plastict nipple & metal/hose-clamp/coolant tank meet, had deteriorated but I could still re-incert metal from hose/clamp into nipple-hole on plastic tank. All coolant had pumped out & “Low-Coolant light” had come on. Tided shoe-string around metal clamp-hose & around coolant tank's center. Filled system with anti-freeze/coolant at Pep Boys. $16.89. No more leaking & runs great. Should I still buy a new coolant tank & install it?