Here's the technical spec of Loctite 404, a crazy glue meant for o-rings. Goes up to 120C 248F

https://tds.us.henkel.com/NA/UT/HNAUTTDS.nsf/web/4DF739D7BEABA90A882571870000D764/$File/404-EN.pdf

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked