Used motor oil soaked into painting

Recently I went to retrieve some of my acrylic paintings from where I had them in storage, only to find someone had unknowingly put a large container of used motor oil near to them. The oil had spilled out and has been extensively soaked into both the canvas and the frame of the paintings. These paintings are graphite drawings with a watered-down acrylic paint and a Krylon “Crystal Clear” acrylic coating. Two of the paintings were also pre stained with coffee. I was hoping if you could tell me if this was at all possible to restore? I am no great artist but these paintings do mean a great deal to me as they are the best I have accomplished and I am heart- broken that this has happened. I would appreciate any advice as to how to save them (or if they can even be saved). You have my sincere gratitude for any advice you could give in this matter.