Service Intervals

Check transmission fluid level each month. Under normal service conditions, no service intervals are necessary. Under severe service conditions, change differential fluid at 15,000-mile intervals, and transmission fluid and filter at 48,000-mile intervals. Severe service conditions are conditions such as continuous operation during extreme temperatures, continuous operation in stop and go traffic, long periods of engine idling, trailer towing, police, taxi, local delivery service or operating in dusty conditions.