Well, if you think about it, most folks don't ride 10k miles a year (of course some do) so realistically your only changing the oil 1 maybe 2 times a year (so that's 10 maybe 15 changes in 10 years). I wouldn't worry about the threads if properly torqued down. They should last the lifetime of the bike. I've been riding on the street for 28 years and never had an issue. Now, what I do worry about with the little gizmo shown is how far does it hang down under the bike? I would hate to have something hit that (curb, rock, etc) and rip that puppy off. If that happens, again, you are learning how to replace the sump.