Subaru WRX & WRX STI Manuals 2012 Impreza WRX & WRX STI Owner's Manual | Page 376

12-6 Specifications ! Manual transmission and rear differential gear oil Oil grade SAE viscosity No. and applicable temperature Applied part and model Oil capacity 5-speed 3.7 US qt (3.5 liters, 3.1 Imp qt) 6-speed 4.3 US qt (4.1 liters, 3.6 Imp qt) STI 1.1 US qt (1.0 liter, 0.9 Imp qt) Others 0.8 US qt (0.8 liter, 0.7 Imp qt) Manual transmission API classification GL-5 Rear differential For the checking procedures or other details, refer to “Manual transmission oil” F11-15 or “Rear differential gear oil” F11-16.