81 22 1 468 879& 11 1 468 041 Chrysler MS1872;. Jeep Grand Cherokee WK2 3000 A630 DOHC V6 140hp;. Only use MOPAR Hydraulic Fluid or equivalent MS, such as Fuchs EG ZH 3044 or Pentosin CHF 11s The pump can fail if you use general purpose power steering fluid There are specific service procedures for adding fluid to the pump reservoir and purging the air from the system You can not just open the cap and pour in fluid.