2010 Acura TL Owner's Manual - Page 516

Engine Coolant If the reserve tank is completely empty, you should also check the coolant level in the radiator. 4. The coolant level should be up to the base of the filler neck. Add coolant if it is low. Pour the coolant slowly and carefully so you do not spill any. Clean up any spill immediately; it could damage components in the engine compartment. 5. Put the radiator cap back on and tighten it. RADIATOR CAP Removing the radiator cap while the engine is hot can cause the coolant to spray out, seriously scalding you. Always let the engine and radiator cool down before removing the radiator cap. 1. Remove all engine compartment covers (see page 508 ). 2. When the radiator and engine are cool, relieve any pressure in the cooling system by turning the radiator cap counterclockwise, without pressing down. 3. Remove the radiator cap by pushing down and turning counterclockwise. 6. Pour coolant into the reserve tank. Fill it to halfway between the MAX and MIN marks. Put the cap back on the reserve tank. 7. Reinstall the engine compartment covers. Do not add any rust inhibitors or other additives to your vehicle's cooling system. They may not be compatible with the coolant or engine components. Maintenance 513 2010 TL