For christmas my wife bought me a 20 gallon parts washer. it didnt come with the fluid, so I did some searching around for what the stores offer. At tractor supply they offer a 5 gallon pail of PSC 1000 parts cleaner solvent for $35. At the Harbor Frieght store, they recommended a 1 gallon bottle of Super heavy duty degreaser for $10 that makes up to 200 gallons of general cleaner. Not to sure which one to use? Is one better than the other?