Engine Grime: for Cars, Tanks, Trains, Trucks, etc.--35ml bottle--acrylic effects for scale models.
$5.99

AK Interactive

Item Number: AKI-082

Engine Grime:  for Cars, Tanks, Trains, Trucks, etc.--35ml bottle--acrylic effects for scale models.

Obtain a greyish, dark and matt aspect that you find on many engines that have had a lot of use.

Apply with a brush or an airbrush to obtain different results.  Blend with a clean brush moist with Enamel Thinner.