Opened the hood on our 2003 Land Rover Freelander SE - started up and there was some type of fluid squirting from the line near the GREEN cap. I shoved the line into the GREEN cap and the squirting stopped. Location is on the right side (from the front) of the engine between battery and firewall (closer to the firewall). What is the name of this line? What fluid is in this line? Should I order a new line? Any comments are appreciated - many thanks.

Daniel