Strange thing happened today.  I swapped out my 180 t-stat. for a Robert Shaw 
195 stat to see what, if any, effect if would have on gas mileage.
Taking the upper return hose off, pulling the old stat and popping the radiator 
cap spilled about 3/4's of a gallon of fluid (according to the buckets on the 
ground)...  I go to top it off after I'm done replacing the stat and it will 
only take 1 quart.  The overflow/reserve tank is just were it was when I 
started.  I go for about a 20 mile drive, run the heater the whole way and 
check the fluid levels when I get home...  Everything says it's topped off and 
there was no change from before I left and the engine was pegged on 195 during 
the entire drive.
So what gives?  I should be at least 2 quarts low but I'm not...  Hmmmmm.
Tom
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