I just picked up a few 55 gallon drums that I am going to store E85 in to make sure all my batches are around the same content to keep my tune safe.
The issue is that the drums once contained either a cleaner solution, hydraulic fluid, Antifreeze or engine oil. I was considering taking a gallon of simple green and dumping it into the container and then filling it with hot water and let it sit for a week or so and then let it dry.
Any one else done this before? what are some other methods?