parts washer

that .99 yellow degreaser works like a charm but its a little strong odor wise. Hey, a buck a bottle aint bad. Purple power works great too but $$. I'd not even attempt vinegar, too caustic. Go to a petroleum distributor, they sell it (solvent) by the gallon, IIRC it was $8 a gallon in bulk 2 years ago. We got heavy truck support here in Long Beach due to the port. They sold ATF and diesel motor oil by the gallon as well, BYOB....They would fill a 5 gallon paint bucket for you. My old friend used mineral spirits, didn't work real well as I remembered.