Blown head gasket SHOULDN'T make much difference- maybe a couple of mpg.

This makes me wonder how the rest of your electronics are doing- something else might be up.

The hillbilly <img src="/forums/images/graemlins/notooth.gif" alt="" /> way to test for coolant consumption is to crank it until it starts, let it run for 10 secs, then shut down and taste the water coming out of the tailpipe. If it tastes sweet, it's coolant. Don't swallow, though! <img src="/forums/images/graemlins/lol.gif" alt="" />

I had a head gasket so shot that water would drip out of the driver's side crossover pipe when you pressurized the rad. Amazingly, the head wasn't warped, so a new gasket later, off we went.

Well, actually, it had to rin for a few minutes to blow the coolant out of the muffler, an event that had me sweating bullets thinking that the new gasket hadn't sealed....

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