🏷️ Basic Information Identification Make: Kia Model: Optima Year: 2004 Generation: Second Generation (MS) 📋 Manual Details Publication Info Manual Type: Repair Service Manual Language: English Format: PDF Availability Availability: Instant Download ⚙️ Engine Specifications Engine 1 Engine Type: Inline 4-Cylinder Displacement: 2.4 L Power: 140 hp @ 5500 rpm Torque: 152 lb-ft @ 4000 rpm Engine 2 Engine Type: V6 Displacement: 2.7 L Power: 170 hp @ 6000 rpm Torque: 180 lb-ft @ 4500 rpm 🔧 Transmission Transmission Options Type: 4-speed Automatic Gears: 4 📐 Dimensions Exterior Length: 187.4 in Width: 70.1 in Height: 57.5 in Curb Weight Curb Weight Min: 3263 lbs Curb Weight Max: 3395 lbs 🔧 Maintenance Oil Recommendations Oil Type 2.4L: 5W-20 Oil Type 2.7L: 5W-30 Oil Capacity Oil Capacity 2.4L: 4.0 quarts Oil Capacity 2.7L: 4.7 quarts Service Intervals Oil Change Interval: 7,500 miles or 12 months Tire Rotation Interval: 7,500 miles