Winterizing...run antifreeze through or pour and fill block/manifolds

[Steve B.]

If I let the hose run before starting the engine, water seeping by the impeller will squeel loudly. So I start the engine and immediately throw the valve to let water in.

Steve B.

[justgary]

I had a run dry impeller for a few years and it would bypass easily with hose pressure.  The rubber impeller I have now doesn't do it so much. 

[goodmatt78]

I just winterized a dozen boats of the past month.  All brands...partial, full and raw water cooled.  I made a bucket with a PVC pick-up and a 1.25 inch hose.  I hook it up somewhere before the impeller.  The transcooler or V-drive are usually accessible.  Then the motor has no issue sucking it in.  If I just put a new impeller in, then I will pour AF in the hose prior to hooking it up to my bucket to shorten the time to prime.   3-4 gallons of AF and done if everything has been drained.   Piece of cake.