HI !
Here another project I have done in the past , it's the AMT 1/43 kits with some additions and modification , If you like to view the complete WIP on this project , I have set-up a GOOGLE page for it, just follow this link:
https://goo.gl/photos/eWtNcMXB2jeganei9
Enjoy !
Thanks Gil. Eastern Front is correct.
The wash is Winsor-Newton tube oil diluted with Mineral Spirits. Once it dries I just wipe it off with a Q-Tip or paper towel.