Thus, the oil filling device may accommodate various heights and angles of oil filling hole of engine and allows {HEAD ~ filling} of oil into {TAIL ~ the engine} to be conducted in a smoother manner 
into
Thus , the oil filling device may accommodate various heights and angles of oil filling hole of engine and allows { HEAD ~ filling } of oil into { TAIL ~ the engine } to be conducted in a smoother manner
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH