Are you tired of paying high prices for gasoline or diesel fuel?
If so, here's your solution.
Drain your oil.
Remove the oil pan from your engine.  
Unbolt all the connecting rods from the crankshaft and remove the
pistons.  Toss them in the garbage.  
Replace the oil pan on your engine, using the proper gaskets.
Fill oil to proper level
Enjoy the money you save on fuel costs.