" Hi Randy, well generally speaking 7,000 hours is a lot of hours for a diesel, but you've obviously taken very good care of the engine. You didn't say whether you've had the top end re-built, which is an option, but I assume you are wondering about re-powering, so my answer depends on what you're getting ready to do. If you're setting off on a world cruise or long passage, you should re-power because you don't want trouble on passage. However, if you're just doing coastal cruising and the engine isn't giving you any difficulty, I've seen Volvo's last for 10,000 hours. Hope this helps. "