[lhbradley]

Went to the boat yesterday. Removed drain plug. Water came out, then some antifreeze/water mix. Decided not to take a chance. Drained the block. Removed the impeller (need to put a new one in anyways), it was very hard to remove. Removed water exit hose from manifold. Connected drill pump to my water intake T fitting hose. CLAMPED OFF BYPASS HOSE!!!!!! Ran drill pump (I think these things are the pits, by the way). Eventually antifreeze started coming out the manifold. Removed block drain to make sure antifreeze was in block. Looked good. Pumped some more through the system.

Moral of the story: Do it right the FIRST time!

Question:

Given that removing the impeller and all that is a pain, could I not just connect a hose to the drain fitting, and pump antifreeze into the block that way? No need to remove impellers or clamp off bypass hoses. Thoughts?