[StevePT]

My 97 GP 3.1L had the intake manifold gaskets replaced in 99 under warranty. I again replaced them a couple months ago.

I got my gaskets from NAPA and they were Victor Reinz gaskets. I noticed they improved the gasket design by press fitting two steel cylinders the thickness of the plastic gasket on the outer edges where the coolant passages are located.

The problem is apparently the low torque requirement will cause the bolts to come loose and then a leak occurs. Then, to fix the leak the person will tighten up the bolts and usually ends up overtightening and cracking the outer edge of the gasket and coolant seeps out the crack.

When I replaced my gaskets I put ample blue loctite on the threads of the bolts and made sure to torque the upper bolts first and then the outer four last.