View Full Version : 351 winterize

10-30-2013, 09:20 AM
Drained the water, exhaust risers, both sides of block, elbow below water pump, removed water pump after pumping 5 gallons of red rv. Talked to a friend, he said are you sure the thermostat opened? The temp guage never reads more than 120 degrees. So now i'm not sure. Went to where i store the boat, uncovered it, checked all the drains and red pop came out all 4 drains. Why can't we just winterize and forget? Always have that doubt. Do you guys feel the same?

east tx skier
10-30-2013, 03:39 PM
Your PCM 351 engine has a bypass on the tstat. Once you drain, you can fill the block, etc. by pouring RV antifreeze through a hose straight into the tstat housing. Doesn't matter if the engine is warm.