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Peter J · 05-01-2013, 10:29 PM

Lots of folks use what's called 600W (not weight) gear oil. You can get it through most the suppliers. Some folks use a mix of gear oil and STP. I'm presently using 85-140 and frankly can't tell the difference althought others say they can. You might want to flush it with diesel and see what comes out the bottom (metal chunks?) and refill with your choice up to the bottom of the filler hole.
Hope this helps a little,
Pete

05-01-2013, 10:29 PM	#4
Peter J Senior Member Join Date: Jul 2010 Location: Olympia, WA Posts: 691	Re: How loud is too loud for gears? Lots of folks use what's called 600W (not weight) gear oil. You can get it through most the suppliers. Some folks use a mix of gear oil and STP. I'm presently using 85-140 and frankly can't tell the difference althought others say they can. You might want to flush it with diesel and see what comes out the bottom (metal chunks?) and refill with your choice up to the bottom of the filler hole. Hope this helps a little, Pete