Well, a little luck doesn't hurt, either.
Just before the trip I replaced a transmission cooler line (same as the one that sprang a leak at Ubehebe Crater in my brother's D1).
Guess what, today it blew.
You could call this self-inflicted since the hose was from Allmakes, but something tells me all of them are garbage, just like the suspension bushings.
But this can cripple your truck pronto, and field fixes are limited - and only if you have a stretch of half-inch ID oil- and fuel-resistant hose, a bunch of hose clamps, a hacksaw blade, and at least two quarts of ATF...