Throwing the Bar's in there only slows the inevitable. Hopefully you didn't have a trace of antifreeze in there - otherwise be prepared for a very quick clogging of your cooling system.
Of course, if this is your daily driver, you want to be as gentle with it as you can at this point - unless, like Bullz_EyE said, you're trying to finish the car off as quickly as you can.
Maybe you've got a compression loss in the cylinders, causing the massive loss of power.
I know that most of the people here will tell you that it's not a matter of if the head gasket will blow, but when. Once the symptoms start, everything you do to try and fix it might delay the problem, but never remedy it.
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Black '87 N/A Auto
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