Today I sealed the inside of the frame and used the rubberized encapsulator anywhere there was surface rust, i.e. my transfer skidplate. Both products seems great initially. Obviously, time will tell. I was really impressed with how the internal frame stuff "spreads". It seems to get everywhere. Even where you might not want it, like all over my nice new BDS leaves. A little flat black cleaned it right up. The rubberized encapsulator is great too. It goes on very evenly and covers great. I give two thumbs way up so far for Eastwood.