To achieve the above object, the present invention provides {HEAD ~ an oil filling device}, which comprises an oil filling funnel, {TAIL ~ an extendable tube assembly}, a direction adjustment assembly, and a coupling assembly 
To achieve the above object , the present invention provides { HEAD ~ an oil filling device } , which comprises an oil filling funnel , { TAIL ~ an extendable tube assembly } , a direction adjustment assembly , and a coupling assembly
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH