I use a liberal dose of high quality anti seize on all of the 8mm bolts on the sub frame bolts, threads, and the angled part of the head of the bolt.
Be especially careful not to over tighten the two bolts that go into the cross tube. The stock bolts and threads are really not long enough to begin with as they strip easy, or get stuck easy. These are the two bolts on either side in the middle of the black horizontal bracket. If you do run into a situation where you can only get one of these bolts out, spread this bracket while turning the spinning bolt. The cross through tube on the main tank will draw out, and there is a flat that you can get a 13mm on to hold it to remove the bolt. I ended up drilling this tube on both sides, and inserting a heli-coil so I could use a 30mm bolt.
Other than the sub frame I use a little blue loctite everywhere else.