the armor around the combustion chambers on the OEM gasket has a tendency to crack. The cracking occurs as a result of metal fatigue caused by the head scrubbing back and forth on the block because the engine has aluminum heads and a cast-iron block. Aluminum expands at a much higher rate than cast iron, which causes the head surface to move more than the block surface. If the head gasket canÆt accommodate the movement, or lacks any built-in lubricity (such as a non-stick coating), thermal expansion and contraction can literally tear the head gasket apart as the miles accumulate. The fix is to replace the OEM head gasket with an improved and redesigned aftermarket head gasket that has stronger combustion armor, better materials and an anti-friction coating that can handle the movement.

http://www.underhoodservice.com/Article/...ts_to_fail.aspx


and what's the deal on this forum having changed? you cant just read the whole thread but only one post at a time?

And if you want to change something, then work on the background color...I cant see the words to read.