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Drivers side of the block above the oil filter is a plug in the water jacket. Ford installs block heaters in the hole. Remove this and this will drain the block. Should be another on the passenger side. I have removed the drivers side plug, not the passenger side. Some know it’s there.
How do you remove the plug? Is it similar to the plugs on the tranny used to fill/empty fluid, i.e. just use a wratchet extention bar to remove? Was considering doing this before tracking my 13 Boss this coming Sunday as it has the original coolant in it, but now concerned about having air pockets develop on the refill...and overheating if they aren't all out by the time I track the car. I don't have a vacuum tool......yet.Drivers side of the block above the oil filter is a plug in the water jacket. Ford installs block heaters in the hole. Remove this and this will drain the block. Should be another on the passenger side. I have removed the drivers side plug, not the passenger side. Some know it’s there.