I used this to reproduce oil leak flows across the wings of an aircraft model with great results. Remember to only use enamel washes over acrylics and vice versa. Very good at recreating light oil leaks.

This allows a convenient way to add dirt and grime streaks to your subject. I use it for areas of an aircraft that experience dirt streaks, i.e. Flaps, ailerons, etc. Use a brush to apply the streak, then use a clean brush slightly damped with odorless mineral spirits to feather the effect to your liking. Works very well and is much more convenient than mixing up an oil wash. Ensure you apply this to an acrylic surface

I love WWII armor and I build every type of model I can. The weathering products from AK Interactive are excellent choices for model building. I've only gotten the very best results and no failures from them. Aging and weathering a plastic model so that it looks real and on the ground used is an art in itself and AK makes the learning curve easy. If I goof up, it only takes a little paint thinner to correct. For great results in weathering, try AK Streaking Grime, use it sparingly and have fun!