RepairPal Certified shops can diagnose and repair your 1993 Jeep Wrangler. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
I'd guess you are referring to Engine Oil.
Engine Oil capacity with filter is 6.1 quarts (5.7 liters)
API - SAE 5W-30 (-20º F to 60º F)
API - SAE 10W-30 (0º F to +100º F)