What oil weight does a 1993 Ford Aerostar XL use?

The recommended oil weight for a 1993 Ford Aerostar XL depends on the engine and the climate. Consult your owner's manual for the specific recommendation. However, 10W-30 is a very common and likely suitable weight for most conditions. If the temperature regularly gets extremely hot or cold in your area, you may need to adjust the weight accordingly (lighter weight for extreme cold, heavier for extreme heat). Always refer to your owner's manual for the most accurate information.