1997 Mercury Grand Marquis Owner Guide 1st Printing - Page 239

u Extended use of the A/C, defroster, rear window defroster and other accessories u Underinflated tires u Heavy loads u Aftermarket add-ons such as bike, ski or luggage racks, bug deflectors, etc. Self-Service Pointers If you choose to do your own fueling, you should also perform a few simple maintenance routines. This extra effort will save you additional money and contribute to the driving efficiency of your vehicle. The following procedures require only a tire gauge, a rag, an oil can spout and windshield washer fluid. u Check the engine oil at every refueling stop u Clean the windshield, outside mirrors and headlights u Check windshield washer fluid u Check tires for excessive wear or worn edges u Check the tire pressure at least monthly 240