colinzj 1881 posts · Joined 2005. #3 · Apr 17, 2012. They use Mopar HOAT 5/100 coolant or Zerex G-05. Same stuff, different colors, pick your poison. The clean way to drain is to use the draincock at the bottom of the radiator, but it's a whole lot faster (and messier) to pull the lower hose. Flushing should normally not be necessary unless JeepGrand Cherokee & Commander Forums. WK Grand Cherokee & XK Commander Forum 2005 WK Limited - 5.7L - OME HD springs - Bilstein shocks/struts - 285/70r17 BFG KM2 - 1.5 inch spacers '08 WK GC Limited. 5.7L HEMI. Quadra-Trac II. Bright Silver Metallic. Class IV hitch. 2005Jeep GRAND CHEROKEE (5.7L 8 -cyl Engine Code [2] 2) Motor Oil, Filters and Lubricants - AMSOIL Protects turbochargers 72% better than required 2 by the GM dexos1 Gen 2 specification. 28% more acid-neutralizing power than Mobil 1. 3; Contains friction modifiers for limited-slip applications; $24.19. Retail Price (USD) Preferred 6efQb7.