Lubrication

Hello. I am replacing the oil on a Tree Journeyman 250 and the replacement calls for OMV glide 68 (the specs are: http://www.google.com/url?sa=t&rct=j...47244034,d.dmQ). I can't find places in the U.S. to buy this from and am wondering if there are any equivalent lubricants out there.

Any input, as always, would be greatly appreciated!