That soounds like one heck of a deal. Now for the Questions:
-Did you have to buy 10 gallons or would you have gotten the same price each if you only bought 5?
-Did that include shipping?
-Does Super UDT meet NH's MC200 spec or even the MC135 spec?
-And last, is Super UDT fully synthetic, or just a blend? At only double the price of conventional UDT, it makes me think if might be just a blend.