Yes. I was talking to 2 trucking friends in a truck stop recently. One runs a Freightliner, and the other one runs a cabover Kenworth. They both haul long-distance, and all over Australia.
When I queried the the total distance their trucks had travelled, the K-Whopper owner said, "4,500,000 kms" (2,796,170 miles) - and the guy with the Freightliner (Cummins powered) said - "that's nothing! - 8,000,000 kms" (4,970,969 miles)!
The K-Whopper has had 2 engine rebuilds, and the Freightliner is on it's 4th engine rebuild. Around 1,600,000 to 1,800,000 kms is a common engine life on long haul trucking here.
Here's the K-Whopper, it's one sweet rig. He mostly hauls two drop-deck trailers, and specialises in machinery and equipment haulage.
https://www.facebook.com/photo/?fbid=738894364218580&set=ecnf.100057237198061