I came across one of those. Also white oak. Suckers popping out all around it. Green leaves on them… some of the branches healthy with nice new growth etc but enough of the tree was dead inside that it came down on its own. This is how the story ended…
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So despite the healthy parts given how low on the trunk that damage is from what I’m seeing there is no saving it. At some point that tree is coming down all on its own.
If it’s close to anything you don’t want destroyed you might consider getting in front of that, you know?
Good luck, fella. White oak is some gnarly stuff…