[64Joker]

Installing an after-market coolant recovery tank (see pic).
There are 2 pipe lines coming out the bottom of the tank, one longer than the other. The longer line appears to go up into the tank almost 3/4 to the top.

Which line is used to connect from radiator overflow tube? What is the second line used for?

 

[FmrStrtracer]

The line that is closest to the top is the overflow(if the tank gets too full, this line will dump). The line closest to the bottom attaches to the radiator.