I was having a poke around the back of the block on my project car and ive just noticed a hose id completely forgot about it comes off under the back of the inlet manifold it looks like it would go to the oil cooler but seeing as ive got a zetec bottom end ive not fitted it due to space issues so my question is can i just "T" this hose into the heater pipe work as i presume it needs to drain some where ?

Cheers mark.

Ps ive not had the engine running yet im still putting bits together in the bay hence why ive only just noticed this hose.