Well I got my new Blizzard but haven't put the oil in it yet. (Watch for my Blizzard post) The manual says to use their oil (surprise) but I was wondering what the rest of you use. I've had underhood pumps for the past 6 years and have always used ATF with no problems. The Central Parts catalog has a notice that today's pumps need special plow oil, I was wondering if this is true or is it a marketing ploy? The plow oil is 4 times the cost of ATF. The coldest I've seen while plowing is 10 degrees here in N.Y.