Multiple Choice question. Select the correct answer. 31. Superchargers are normally lubricated by ________? A. A self-contained lubrication system. B. Engine oil through passages in the intake manifold. C. Superchargers don't need lubrication. D. None of these answers are correct. Multiple Choice question. Select the correct answer. 32. A turbocharger may be cooled by ________. A. Engine coolant that circulates through coolant channels built into the turbocharger housing. B. Engine coolant sent from the engine's thermostat housing through a coolant inlet pipe to the turbo housing. After the coolant has circulated through the turbocharger housing, it is returned to the water pump through the coolant outlet pipe. C. Turbochargers don't need cooling. D. Both "Engine coolant that circulates through coolant channels built into the turbocharger housing" and "Engine coolant sent from the engine's thermostat housing through a coolant inlet pipe to the turbo housing. After the coolant has circulated through the turbocharger housing, it is returned to the water pump through the coolant outlet pipe". Multiple Choice question. Select the correct answer. 33. The intercooler ________ the turbocharged air before it reaches the combustion chamber. A. Heats. B. Cools. C. Lubricates. D. All these answers are correct