Triumph66 1,256 #1 Posted January 25, 2015 I have a Bolens rotavator and a mowing deck for my tractors. I am in the process of cleaning them. I want to drain the old oil from the gear box on the two implements. Can I use EP90? If not, what grade oil? Thanks Share this post Link to post Share on other sites
OldBuzzard 186 #2 Posted January 26, 2015 (edited) The "Owner Operation and Maintenance Manual" manual for the 18609-18610 tiller calls for #90 gear lubricant: LUBRICATION The gear case is filled at the factory to filler hole level with #90 gear lubricant. Check oil level after every 8 hours of operation and add lubricant as necessary to maintain filler hole level. The drive shaft assembly has a grease fitting on each universal joint, lubricate fittings every 8 hours of operation with pressure gun grease. I would be wary of using EP spec as it has additives that do not play nice with "Yellow Metals". I would recommend GL1 spec 80-90WT which can be found in most auto parts stores. Here's that manual in PDF form: 18609-18610 Tiller Oper-Maint.pdf Edited January 26, 2015 by OldBuzzard 1 Triumph66 reacted to this Share this post Link to post Share on other sites
Triumph66 1,256 #3 Posted January 26, 2015 OB, thanks for the PDF attachment; very useful information. Cheers Andrew Share this post Link to post Share on other sites
