@Chris McGee I ended up trying some North Star Industrial Degreaser from Northern Tool (their brand). It was on clearance so I thought I would give it a try. I put it on undiluted, agitated with a medium stiffness brush, let it sit for about 5 minutes then rinsed. I did this 2 more times at a 1:1 ratio then hit it with a surface cleaner and hot water (about a 200 degrees). It’s 90% gone and it had been there more than a year so I call that a win. Thanks for the response. I already started the job before I saw it. I might try that method next time I run into this issue.

Good info to have. I was thinking I needed a little of everything just in case something came up. I’m in Fayetteville, NC