To display oil feed data so that a customer on a driver's seat in a vehicle can easily view by projecting the data to a windshield with a signal received from an oil feed controller which controls an oil feed mechanism equipped with a feed nozzle at a tip of a feed hose connected to a feed pipe.

An oil feed mechanism A comprises a pump 7 and a flow meter 8 mounted on a feed pipe 6, a motor 9 for driving is connected to the pump 7, a flow rate pulse generator 8a is provided on the flow meter B, and a nozzle switch 13 for sensing that a feed nozzle 11 is hooked/unhooked from a nozzle hook is provided. An oil feed controller 15 outputs an oil type signal selected by an oil type selection button 3b on a key pad 3, a feeding signal when the feed nozzle 11 is unhooked from the nozzle hook and the nozzle switch 13 is closed, a fed oil data signal during feeding and a feed complete signal when a feed slip is issued from a printer and feeding is complete to a projector 4, and the displayed data is projected to a windshield of a vehicle being fed.