There's not much about the design that leaves it open to failure... other than bottoming out just right and ripping it and a chunk of the oil pan out. Myself, I stick with bolts, but I know a few people (including a couple mechanics) running these and not one has had a problem yet.
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum.
If you're so inclined I'm always more than happy to accept tips via PayPal. 
Tip Jar ---> 
|