hi what i would like to no is -i have a 3.0 OMC Cobra i just drain the block and the water cool exhaust manifold now i want to put the antifreeze in when i was flushing the engine i did not see any water coming out of the block ( drain plugs are out for now )do i have to run the engine with the ( i no the drain plugs back in ) in to get the water back in the block & exhaust manifold <br />thanks Jim
