Lubrication Service Intervals
WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 1991 Plymouth Sundance, 1991 Plymouth Laser, 1991 Plymouth Acclaim, 1991 Eagle Talon, and 1991 Eagle Premier. However, it is still accessible from the selected car via links, so may be relevant.
Check fluid level whenever performing other underhood services. Draining, refilling and band adjustments are not required under normal driving conditions. Under heavy duty (severe service) conditions, change fluid, replace filter, and adjust bands (if applicable) every 15,000 miles. On ZF 4HP-18 units, change transaxle fluid and filter screen every 30,000 miles. Although differential fluid level must be checked, the fluid need not be replaced. On F4A22, F4A33 and W4A33 units, change the transaxle fluid and filter screen every 30,000 miles.