I had some old Target Coatings product in my basement for the past 3 years. I never opened it until yesterday. It turned to a paste like substance. I took a litlle of this stuff out and mixed it with distilled water, which is recommended for thinning, and was able to thin this stuff out pretty well. It looks good to me. I could strain it to make sure all lumps are out. Can I assume this product is Ok to use? Thanks.