An easy way to enhance the look of any diesel locomotive is to blacken the grills and vents to provide more depth.  You can use a black wash to bring out the grill or vent details.  Weathering powders are extremely effective bringing out locomotive vent and grill details.

Micro-Trains Grain Tower Build by Modelersguild.com

Oh I can feel it, the empire is growing. Granted it is Z scale yet that diminishes nothing in the [ ... ]

You may have a link on your desktop, a bookmark or favorite for ZCS, maybe you just key in zcentralstation.com into your browsers URL window.  Maybe, [ ... ]

Hopper Weathering Clinic III
By Bill Mock
January 2010

OK, I gave the inside of these hoppers a wash of Engine Black below the coal line. They [ ... ]