Maintenance and Service Guide

Operating in dusty conditions such as unpaved or dusty roads

Every 3,000 miles or 3 months Change engine oil and replace oil filter

Every 15,000 miles Replace fuel filter

Every 30,000 miles Change automatic transmission fluid

Every 50,000 miles Change rear axle lubricant (F-450 and F-550 only)

Every 60,000 miles Change transfer case fluid

As required Replace engine air filter

As required Replace cabin air filter

Off-road operation

Every 30,000 miles Change automatic transmission fluid

Every 50,000 miles Change rear axle lubricant (F-450 and F-550 only)

Every 60,000 miles Change transfer case fluid

As required Replace cabin air-filter

As required Inspect and lubricate U-joints

Special Operating Conditions