When the gasoline engine is running, fuel particles splash to {HEAD ~ the fuel tank cover} and are absorbed by the foam in {TAIL ~ the fuel tank cover} 
When the gasoline engine is running , fuel particles splash to { HEAD ~ the fuel tank cover } and are absorbed by the foam in { TAIL ~ the fuel tank cover }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL