Boss Hoss
FRF Addict
Takes a special machine to do the Ford Tranny----has a thermostat. There are several threads on it. I personally did mine and watched the machine do its thing putting Amsoil fluid at the Ford store.
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I changed out my antifreeze the other day but according to the manual the capacity of the system is 16 quarts. I was only able to get about 8 quarts out and that included starting the engine for a few minutes to see if the water pump would push more into the radiator to drain out. I waited for about 45 min. after opening the radiator drain plug until there was nothing else dripping out. When refilling the system I was also only able to pour in about 2 gal. of 50/50 coolant.
Your playing with fire starting the engine with no coolant. It also acts as a lubricant for other equipment.
It appears that the thermostat is in the top of the engine. You should be able to flush the block where the heater hoses connect. This will bypass the thermostat. Remove the lower hose from the radiator so the fluid has a place to exit. Take the inlet heater hose off of either the heater or block. It will be the hose that is the highest on the block. Run water through the block via the removed hose. Or use your own hose.
Run water through the heater and radiator. Most of the water will drain out, but to remove more you can push it out by blowing compressed air through. Never pressurizing the system, but forcing air through to get the remaining water out.
Additional hoses and some adaptors help with this configuration of flushing.
Good luck.
Yukon Joe
GREAT LAKES RAPTOR EXCURSIONS