I am curious.....do the late models have metal impellers instead of plastic? Are aftermarket WPs metal or plastic? Are metal impeller WPs failing also? Have any other vehicles successfully used plastic impellers? I have 80 K on my 96 2.5L and am thinking about upgrading to the metal impeller WP this fall when I change my antifreeze. I have used DEXCOOL for about 3 years now w/no apparent problems.
