Windshield Sealant Replace Or Reuse Seal

You can use 8509 and it probably will be OK.
Won't set up and can clean up at your pleasure.
You can use PLS 30 and it won't every leak but you will never the the gasket back out.
Works good for changing windshields later one.
The rubber stays put.
Clean up has to be quick though.

Your old gasket will shrink up while you have it out.
I've gotten around this by putting them between two post with a come a long and stretched them.
Then put the in quickly before they shrink back.
If you are going to reuse your windshield, cut an trash the old gasket anyway.