I have had the same thing on mine.... for the last 10K I have re tq the heads no change and its never low.. I wonder if I have a leak in my hose that goes to the reservoir...


1997 Montero LS with a motor swap a 1990 V6 12valve ported heads full 2.5in Ex I run stock tire size for Daily use, off road have 33x12.5 working on going trubo.