two metal car pistons in poor condition with soot oil removed from the used engine in a deposit of oil lying on workbench in a

alloy auto automobile car cave chrome condition connecting consumption corner cylinder deposit diesel disassembled dismounted element energy engine engineering equipment fuel gasoline grave high hole horsepower iron lying machine machinery mechanical metal metallic motion motor oil part piston pistonrod pistons pocket poor private removed ring rod silver soot steel transportation truck two used vehicle white workbench