Remotely controlled crankcase oil drain valve

Mechanism for draining crankcase oil on an automotive vehicle comprising in combination a drain valve assembly having a threaded nipple adapted for engagement in a crankcase drain plug opening, said drain valve assembly having a casing including an outlet opening and a rotary plug valve element having a through port adapted in one position of the plug to register with the outlet opening, a shaft on the valve assembly at right angles to the axis of the outlet opening and secured to said plug for rotating it to valve closed and valve open positions, a crank arm attached to said shaft externally of said casing and operable to turn the shaft with said plug and having a stop extension, a cooperating pair of stop elements on the valve assembly in spaced relation engageable with the stop extension to arrest movement of the crank arm at two positions corresponding to the valve closed and valve open positions of the plug, a remote mounting bracket adapted for attachment to a structural member of a vehicle in a desired position beneath the hood, a manual lever pivotally mounted on said bracket and swingable to valve closed and valve open positions of said bracket, detent means on the lever and bracket cooperating to releasably hold the lever at the valve closed position, and transmission means interconnecting the lever and said crank arm of the valve assembly, whereby movements of the former produce corresponding movements of the latter to and from said valve open and valve closed positions.