98 blazer . im loosing coolant about a gallon a week . no leaks anywhere oil is clean, nothing dripping from exhaust where is it going

 

check on top of your engine...probably lower intake....take a peek.

 

I say the lower intake gasket as well.

 

check under your dash is your carpet wet ?

 

When the heater core failed my windows steamed up like crazy and the antifreeze smell was strong. When the intake exhaust manifold gasket failed antifreeze dripped on the pavement near the rear of the engine.

 

carpet is dry . no drips on ground whatsoever , left it running for 40 minutes on dry pavement.

dont see any antifreeze on the upper plenum

im usually pretty good at figuring this stuff out but im stumped. i cant detect any antifreeze in the exhaust either

had some bubbles in radiator but i figured that was because it was low and working them out


I will drive for 30 min top it off and check for bubbles and a possible blown head gasket

fyi motor was not overheated