Maintenance and Service Guide

Natural Gas and Propane Vehicles

 Every 3 years from the date of tank manufacture - Inspect NGV fuel tanks

 Every 5 years from vehicle build date - Inpsect propane fuel tanks

 Every 15 years from the date of tank manufacture - Replace NGV fuel tanks

Class A Motorhome/E-550

 Every two years - Change brake fluid

 Every 30,000 miles - Change automatic transmission fluid

Normal Vehicle Axle Maintenance

 Rear axles and power take off (PTO) units containing synthetic lubricant and light

duty trucks equipped with Ford-design axles are lubricated for life. These

lubricants are not to be checked or changed unless a leak is suspected, service is

required or the axle assembly has been submerged in water. The axle and

PTO lubricant should be changed anytime the axle and PTO have been submerged

in water. Non-synthetic rear axle lubricants should be replaced every 3,000

miles or 3 months, whichever occurs first, during extended trailer tow operation

above 21 Celsius (70 degrees Fahrenheit) ambient and wide open throttle

for extended periods above 45 mph. The 3,000 mile lube change interval may

be waived if the axle was filled with 75W140 synthetic gear lubricant

meeting Ford specification WSL-M2C192-A, part number F1TZ-19580-B or equivalent.

Add four ounces of additive friction modifier C8AZ-19B546-A (EST-M2C118-A)

or equivalent for complete refill of Traction-Lok rear axles. The axle lubricant should

be changed anytime an axle has been submerged in water.

Normal Schedule

2003 Universal Service Guide (usg)

Universal Service Guide

USA English (fus)