I washed out the 4 drums today, but didn't smell the coconut oil. I was quite the site out there with my pink Playtex Gloves! They are drying off in my workshop now. Looks like I won't be able to paint the solar collectors for the foreseeable future, but I can cut the holes in the drums for the hose bulkheads, level the drums of in my greenhouse, and run all the hosing for the collectors. Once I can paint the collectors and attach the plexiglass, I can get the system up and running.