If you're running hot, your best bet is to simply block off less. Fixing a blown head gasket is not worth 2mpg, even in a simple car like an Escort. At best, you waste a saturday, at worst, you ruin an engine.
Needless to say, I've seen both extremes of head gasket failures in past vehicles. I had an 89 4Runner that blew one, and filled the engine with coolant, leading me to sell it for $75 and a playstation game, and my 95 GMC Slownoma merely leaked coolant, but cost a fortune to fix anyway (along with the head gasket, basically everything that could have broken without leaving me stranded did).
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