I have a Quadra Drive system

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! With your 2002 Jeep Grand Cherokee’s Quadra-Drive system, you're right to be careful about fluids. For the transmission and transfer case, Mopar recommends specific fluids, and it’s usually a good idea to stick with their recommendations, especially in a system as sensitive as Quadra-Drive. Using generic or incorrect fluids can mess with the system’s ability to distribute power correctly, potentially leading to wear or failure. Mopar ATF+4 is typically what’s recommended for the transmission, and for the transfer case, it's important to use the correct fluid per the owner's manual. If you need any further advice or want help finding a trusted RepairPal shop in your area, please feel free to call us at 877-913-1554.