1997 Ford Explorer Severe Duty Supplement 1st Printing - Page 2

Severe service conditions SEVERE SERVICE CONDITIONS USING THE SEVERE DUTY SUPPLEMENT This supplement is intended to aid the operators of special service or fleet vehicles used in severe duty or high mileage operations. Failure to maintain your special service vehicle properly may restrict warranty coverage, reduce vehicle performance and operation and adversely affect vehicle safety. For a detailed list of severe duty maintenance intervals, refer to the "Service Guide". Information about this guide The information found in this guide was in effect at the time of printing. Ford may change the contents without notice and without incurring obligation. Engine maintenance Replace engine oil and filter every three months or 5,000 km (3,000 miles) if your vehicle operates under any of the following conditions: • Short trips of less than 16 km (10 miles) when outside temperatures remain below -18°C (0°F). • Operating during hot weather (above 32°C [90°F]) • Towing a trailer or carrying a heavy load. MAX 2