2009 Chrysler Aspen Owner Manual - Page 410

408 MAINTAINING YOUR VEHICLE Selection of Lubricant It is important that the proper lubricant is used in the transmission to assure optimum transmission performance. Use only manufacturer's recommended transmission fluid; for correct fluid type, refer to "Automatic Transmission" under "Fluids, Lubricants and Genuine Parts" in this section. It is important that the transmission fluid be maintained at the prescribed level using the recommended fluid. Special Additives Automatic Transmission Fluid (ATF) is an engineered product and its performance may be impaired by supplemental additives. Therefore, do not add any fluid additives to the transmission. The only exception to this policy is the use of special dyes to aid in detecting fluid leaks. In addition, avoid using transmission sealers as they may adversely affect seals. CAUTION! Using a transmission fluid other than the manufacturer's recommended fluid may cause deterioration in transmission shift quality and/or torque converter shudder. Using a transmission fluid other than the manufacturer's recommended fluid will result in more frequent fluid and filter changes. For correct fluid type, refer to "Automatic Transmission" under "Fluids, Lubricants and Genuine Parts" in this section. Transfer Case Inspect the transfer case for fluid leaks. If a fluid leak is evident the transfer case fluid level may be low. Have the transfer case serviced immediately.