I flew the civil "G" model for ten years and was a check airman and DPE on the airplane. We had some aircraft with over 60,000 hours, while on the third generation wing. Properly maintained (like any aircraft) they're a winner for their task of flying outsize cargo to remote places.
Never once had to shutdown an engine inflight in almost 6,000 hours. Lost the Utility hydraulic system once and had the FE crank the gear down (it wouldn't freefall).