1978c81 385 #1 Posted November 24, 2015 Hello. Can someone tell me what fluid to use in an HY-2 pump? Thank you Share this post Link to post Share on other sites
953 nut 51,680 #2 Posted November 25, 2015 The manual says to fill it with Hydraulic Fluid, I have used ATF in my 953s since that is what was in them when I got them. http://www.wheelhorseforum.com/files/file/1859-lift-hydraulic-1962-1963-hy-2-a-7140pdf/ See what you think, here is the manual. Share this post Link to post Share on other sites
prondzy 3,867 #3 Posted November 25, 2015 I would use hydraulic fluid for tractors. Atf is hydraulic fluid with detergents in it that carry dirt and debris on the surface of the detergents which can cut seals. Hydraulic fluid captures dirt and debris and suspends it in the fluid. But I guess six of one half dozen the other. Take it for what it's worth. 2 Share this post Link to post Share on other sites
