tess,
Don't know where you are but up here in the Great White North we usually put the
raw water intake hose in a bucket of 50/50 anti freeze, start the engine, and
pump the stuff through till it comes out the
exhaust. Make sure you put a bucket under the
exhaust to catch the stuff that comes out and properly dispose of it. If the engine is
raw water cooled, take the thermostat out first. Some people like to take the impeller out after running the anti freeze through, others leave it in. No need to drain anything. You should loosen the
alternator belt for the
winter.