Apr 11, 2012· With70 hpyou have plenty of snoose to run anymill. I used the 3020- orig 63, overhauled70 hp. Actually had the Gehl 65millwhen I started farming in "72, on a D17, 53hp. Ran that for 4-5 years, til I got the 3020. Had a 4020 but never needed it on themill. Oats did make the D17 grumble.