Service Intervals
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1990 Mercedes-Benz 190E, 1989 Mercedes-Benz 300TE, 1989 Mercedes-Benz 300SEL, 1989 Mercedes-Benz 300SE, and 1989 Mercedes-Benz 300E. However, it is still accessible from the selected car via links, so may be relevant.
Check and correct fluid level every oil change. Change fluid every 15,000 miles.