Abstract: A coolant transfer machine for an automotive engine includes first and second fluid transfer systems. The first system, operated when the engine is not running, sequentially first removes at least a substantial portion of used coolant from the engine. The first system then collects in a used fluid container the used coolant as the used coolant is being removed and then replaces the removed used coolant with new coolant from a new fluid container. The second system, operated when the engine is running, simultaneously displaces at least a substantial portion of used coolant in the engine with new coolant from the new fluid container and collects the displaced used coolant in the used fluid container. A manually operable switch has a first position that enables operation of the first fluid transfer system and a second position that enables operation of the second fluid transfer system.

Abstract: A coolant transfer machine for an automotive engine includes first and second fluid transfer systems. The first system, operated when the engine is not running, sequentially first removes at least a substantial portion of used coolant from the engine. The first system then collects in a used fluid container the used coolant as the used coolant is being removed and then replaces the removed used coolant with new coolant from a new fluid container. The second system, operated when the engine is running, simultaneously displaces at least a substantial portion of used coolant in the engine with new coolant from the new fluid container and collects the displaced used coolant in the used fluid container. A manually operable switch has a first position that enables operation of the first fluid transfer system and a second position that enables operation of the second fluid transfer system.

Abstract: A coolant transfer machine for an automotive engine includes first and second fluid transfer systems. The first system, operated when the engine is not running, sequentially first removes at least a substantial portion of used coolant from the engine. The first system then collects in a used fluid container the used coolant as the used coolant is being removed and then replaces the removed used coolant with new coolant from a new fluid container. The second system, operated when the engine is running, simultaneously displaces at least a substantial portion of used coolant in the engine with new coolant from the new fluid container and collects the displaced used coolant in the used fluid container. A manually operable switch has a first position that enables operation of the first fluid transfer system and a second position that enables operation of the second fluid transfer system.

Abstract: A coolant transfer machine for an automotive engine includes first and second fluid transfer systems. The first system, operated when the engine is not running, sequentially first removes at least a substantial portion of used coolant from the engine. The first system then collects in a used fluid container the used coolant as the used coolant is being removed and then replaces the removed used coolant with new coolant from a new fluid container. The second system, operated when the engine is running, simultaneously displaces at least a substantial portion of used coolant in the engine with new coolant from the new fluid container and collects the displaced used coolant in the used fluid container. A manually operable switch has a first position that enables operation of the first fluid transfer system and a second position that enables operation of the second fluid transfer system.

Abstract: In apparatus for control of liquid coolant flow to and from an engine and radiator coolant system, comprising a closed tank to receive the coolant; a first line extending at the exterior of the tank, and also communicating with the tank interior, the first line connectible with the coolant system; ducting associated with the tank and having an inlet for connection to a source of compressed air, an outlet outside the tank, and having an aspiration side port between the inlet and outlet, the side port also connected to the tank interior; and a first valve for controlling compressed air flow through the ducting; whereby in one position of the valve compressed air flows into the tank via the side port to drive coolant from the tank interior via the first line and to the coolant system, and in another position of the valve compressed air flow through the ducting to the outlet acts to draw fluid into the tank from the engine coolant system via the first line, in response to suction communication to the tank interio

Abstract: An apparatus to supply liquid coolant, to and to transfer coolant from, an engine and radiator coolant system, comprising a supply tank having a coolant fill inlet, which is closable, and a coolant delivery outlet to deliver coolant via a hose to the engine and radiator coolant system; an air pressurization inlet to the tank to receive compressed air that forces coolant from the tank via the outlet; and structure responsive to a predetermined coolant flow from the tank for relieving pressurization of the tank, whereby coolant flow is then interrupted.