I put quick steel plastic repair because the new elbow . That goes to the return line to the reservoir was leaking. It's supposed to harden like steel and be high temp and resistant to all fluids.... I put more on the radiator neck it's leaking less but not fixed....I'm going to need new radiator this is just temporary fix ....

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1994 e320 (Charcoal and grey) 140, 000 miles