Since my parents had the water pump changed in the 420SEL, i noticed the mechanics put in green Prescrap in the system, and on verge of an heart attack, drained the system out before it was too late. But it was too late. I noticed a green drip out of the radiator before the change. Now the car is losing coolant. Plus i lost the invoice for 1-800-radiator, i'm the process of looking up credit card records. Is it possible to have this leak repaired, it appears to be between the tank and core? If not, and if i'm successful at forcing the radiator place to get me a new radiator, can I demand them to get me an Behr? The one in there right now is a Valeo.