Re: Corn Head Grease Home › Forum › Ask A Member › Corn Head Grease › Re: Corn Head Grease garry-in-michiganLifetime MemberReplies: 3583Topics: 31 July 23, 2018 at 5:53 am #79938 The 00 grade is thicker, it may not get into all the nooks and crannies in a needle bearing gearcase, that is Mercury, but would be fine with ball bearings . . . 😎