Need help in using Bar's Leaks

Boy, do I ever need help! I am having trouble flushing and using Bar's Head Gasket Repair. The 2000 Windstar's closed pressurized recovery system (no radiator cap) is driving me crazy! Having trouble determining where I should expect the 'flushing' water to exit when I put it in at the 'tee' in the heater inlet hose. And where should I pour the Bar's product in after I flush the system, if I'm lucky enough to get it flushed... Anyone out there that has done this successfully and is willing to tell me how you did it?

The coolant reservoir cap is the system's pressure cap. It's where you'd add the Bars Leaks.

When flushing, I simply disconnect the lower radiator hose to create an outlet for the old coolant and water. Last time I did this, I also replaced the thermostat (generally a good idea), and did some more flushing before installing the new thermostat (so there was another location for coolant and water to get out of the system).

Bar's head gasket sealer.....from what I remember from reading the bottle.....
NOTE....read the bottle yourself and don't depend on my memory!!!!

The Bar's head gasket repair product requires ALL the antifreeze be out of the system. So you will need to flush the system with pure water.......
Distilled water would be best.
That will take some time.
You can drain the system by opening the drain "petcock" on the bottom, engine side of the radiator. It is on the driver side on my '96.
You may then be able to get more fluid out by removing the lower radiator hose.
Then, you will add the distilled water and Bar's head gasket repair product.
I would do this by adding the Bar's product into a radiator hose......bottom would be best...but how you would do that...without it running out before you got the hose connected........
So....I would add it to the TOP radiator hose..........If you can get a angle to pour it into the radiator at that point....that would be good also..
The point is....you will be best served by getting it into the main flow of coolant......the overflow bottle is NOT in the main flow.......and it will take some time to get the full dose of the product from the overflow bottle into the water that is flowing through the passages in the head.

Then.....I seem to remember the instructions telling you.....after running the engine with the product flowing through the engine for a certain period of time.......to let the engine cool....and completely draining the water from the engine, best done by the petcock on the radiator and removing the lower radiator hose......and then let the engine sit for a period of time......before refilling with a quality mixture of antifreeze and distilled water.