Antoni - thanks for dropping by. Unfortunately as is often the case, I only found out the errors in stencil placement after the fact.
Trey and Mike, thank you for commenting.
The oil streaking was a three part step, with a fourth corrective step. Using Vallejo colours thinned down to varying degrees with both water and future to give a slight sheen.
- first laid down a thin layer of ochre over the whole area.
- next came black red for the more grimier looking oil stains.
- lastly a little prussian blue added to darken the black red for more heavier streaking.
After setting it aside, I came back and realized it looked overdone. So instead of redoing everything, I cut several thin strips of Tamiya tape and masked the four prominant streaks that you see now, as well as most of the rear side areas as they seemed alright. Sprayed the underside light blue over this, removed the masks, some final touch ups and that was it.
regards,
Jack