2009 Toyota 4Runner Owners Manual - Page 495

6-1. Specifications Cooling system 4.0 L V6 (1GR-FE) engine 10.4 qt. (9.8 L, 8.6 Imp.qt.) 4.7 L V8 (2UZ-FE) engine 13.0 qt. (12.3 L, 10.8 Imp. qt.) Use either of the following. • "Toyota Super Long Life Coolant" • Similar high-quality ethylene glycol-based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology Do not use plain water alone. Capacity Coolant type Ignition system Spark plug 4.0 L V6 (1GR-FE) engine Make Gap 4.7 L V8 (2UZ-FE) engine Make Gap DENSO K20HR-U11 NGK LFR6C11 0.043 in. (1.1 mm) DENSO SK20R11 NGK IFR6A11 0.043 in. (1.1 mm) 6 NOTICE Vehicle specifications n Iridium-tipped spark plugs Use only iridium-tipped spark plugs. Do not adjust gap when tuning engine. 475