1998 Mercury Grand Marquis Scheduled Maintenance Guide 2nd Printing - Page 5

Normal schedule Items for Emission Control Service are shown in italics. For items marked with a number in parentheses such as (1), see footnote at the end of this section. Rear axle lubricants should not be checked or changed unless a leak is suspected, service required, or the axle has been submerged in water. The rear axle lubricant should be changed anytime the axle has been submerged in water. Rear axles containing synthetic lubricant are lubricated for life. These axles are not to be checked or changed unless a leak is suspected, service required or the axle has been submerged in water. The rear axle lubricant should be changed anytime the axle has been submerged in water. Police and Taxi Vehicles: Replace rear axle lubricant every 160,000 km (100,000 miles). Rear axle lubricant 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 118 ml (4 oz.) of additive friction modifier C8AZ-19B546-A (EST-M2C118-A) or equivalent for complete refill of Traction-Lok rear axles. The rear axle lubricant should be changed anytime the axle has been submerged in water. 8,000 KILOMETERS (5,000 MILES) u Change engine oil and replace oil filter. u Rotate tires and adjust air pressure. DEALER AUTHORIZATION Date: Mileage: 16,000 KILOMETERS (10,000 MILES) u Change engine oil and replace oil filter. DEALER AUTHORIZATION Date: Mileage: 5