I have & it's not as good as the Epnoc. Ya shouldn't use the Tri Flow grease on plastic parts either. Though if ya don't have any plastic gears in an older machine ya can use the Tri Flow on metal gears. The Epnoc is better though. While we are talking about Tri Flow: Tri Flow oil just doesn't hold up as an oil. What it is good for is getting stuck screws un-stuck. Stick w/clear refined oil like Zoom for the moving parts in your machine. It is cheaper anyway.