What brand of gear oil are you all using?? I know it should be GL-4 rated. Any synthetic use? After hearing about a 2014 Grizz 700 without rear final drive lube, I decided to drain my gear boxes. I went with Lucas Synthetic 75/90. The old stuff looked much different than what went in. I was relieved to find that there was lube in both gear boxes but some fine shiny metal came out.

What brand of gear oil are you all using?? I know it should be GL-4 rated. Any synthetic use? After hearing about a 2014 Grizz 700 without rear final drive lube, I decided to drain my gear boxes. I went with Lucas Synthetic 75/90. The old stuff looked much different than what went in. I was relieved to find that there was lube in both gear boxes but some fine shiny metal came out.