Citrus, if you want to keep the waterproofing, use double or triple the amount of fabric softener.
My SO told me this trick, and it really works. He's an aeronautical mechanic and gets all sorts of jet fuel and oil on his uniforms. He uses extra fabric softener so that stuff will run off his uniforms instead of being absorbed.
Thanks everyone- I am using a commercial size washer at a laundry mat, so washing twice will mean I have to sit around for two hours.... ugh... I am going to do the wash and then triple the fabric softner!!!!!!