Honda (pilot/passport) is change diff fluid after 15,000 miles, then every 36,000 after that. My M3 had diff fluid done (under warranty) at 1200 miles (yes, 1,200 miles) and again at 30,000. New parts wear. That wear contaminates the fluid. It’s a simple service, just spill and fill.
With quality full synthetic oil, 10k miles is fine. In Europe it’s not uncommon to go 15,000 miles (25,000km) between oil changes. Now, this “partial synthetic” Honda and Toyota dealers use? Yeah, I wouldn’t go more than 5k.