[Mark IV]

Double check the upper rad hose connection. You may want to double clamp the hose to rad spouts. Do not overtighten the clamps as too tight does NOT increase the seal. Sometimes if a hose is leaking all it takes is to remove it, clean the hose and the nipple and reinstall.

And when will the BDR guys jump into this thread and tell us how "Brand X" NEVER leaks and how fast Suzy Creamcheese's silver car is????