Question When inspecting the engine compartment, you should not: Answers Check the engine oil level. Check the coolant level in the radiator. Drain the brake fluid. Check the windshield washer fluid level. Explanation When inspecting the engine compartment, you should check the oil level, coolant level, and windshield washer fluid level, among other things. This questions appears in the following tests: District Of Columbia Class B Knowledge Test Illinois HazMat Illinois Passenger Nevada Tank New Hampshire Class B Knowledge Test Oregon Class B Knowledge Test South Dakota Class B Knowledge Test West Virginia Tank Wyoming Class B Knowledge Test