Finding Durablend is the hard part, getting it at a decent price is a win IMO. That comes out to $16.50 for 5 quarts, comparable to Dexos blends in jugs at Wally's. And you won't find Durablend at any Wally's around here anyway.
2004 Jeep GC WJ 4.0 @ 123k Pennzoil YB 5w30 - MoS2
Napa Silver 31516
KIA Sedona 41k, Chevy Lumina 174k, Chrysler Sebring 172k, Chrysler Concorde 97k