Jhawkins 43 #1 Posted July 23, 2017 What fluid do I use in my 5010 3 speed transmission Share this post Link to post Share on other sites
SPINJIM 1,981 #2 Posted July 23, 2017 (edited) 80w90 gear oil . It takes about a quart, or until it comes out of the hole on the right side of the trans case. Edited July 24, 2017 by SPINJIM 3 Share this post Link to post Share on other sites
