oil pan		the property of a fluid that resists the force tending to cause the fluid to flow.
oil level gauge		a curved lever that pivots in the middle. One end is attached to the top of the valve stem. In overhead-valve engines the other end is attached to the pushrod. In some overhead-cam engines the other end is attached directly to the camshaft lobe. As the camshaft rotates, it pivots causing the valves to open and close.
oil pump		filters out the impurities which get into the oil
valve timing		receptacle for holding engine oil
push rod		cylindrically shaped component that presses against the lobe of a camshaft and moves up and down as the cam lobe rotates
check ball		screw used to adjust the clearance between the valve stem and the lifter or the rocker arm; valve lifter itself
lubrication system		a substance, usually a fluid, used to remove heat
timing belt pulley		the rod that connects the valve lifter to one end of the rocker arm. Used on valve-in-head installations where the cam is below the piston and the valves are above the piston. The rods are moved by the cam and activate the valve lifter
oil pressure sender gauge		pumps the oil to each part of the engine
viscosity		supplies engine oil to the rotating and sliding parts of the engine
valve lifter		measured gap between the end of the valve stem and the rocker arm, cam lobe or follower that activates the valve
oil filter, which		adjusting the position of the camshaft to the crankshaft so that the valves will open and close at the proper time
valve clearance		stores the oil
relief valve		a spring-loaded jockey pulley or idler pulley designed to take up the slack in the timing belt
oil pan		controls the maximum oil pressure
tappet		measures the oil level to the oil pan
coolant		detects the oil pressure
rocker arm		a small ball (like a ball bearing) often made of metal or plastic, found in a check valve to halt the progress of fluid in a certain direction.