What's this glue stuff behind my engine oil cooler?

[TechnoViking]

Any ideas?

[Mitch Leland]

Maybe it's Aviation Permatex that was ceremonially misplaced...

[john walker's workshop]

those are potential leak areas. there's a steel tube case into the case and sometimes there is seepage there. someone was prudent in applying epoxy there.

[ZOA NOM]

JB weld to reinforce potential leak areas where the underlying casting may be thin. Wayne's rebuild book shows similar areas on the engine case and chain housings where it is used.

[Grady Clay]

Martin,

There is a cast-in-place pipe there that is part of the oil system. For whatever reason (casting I suppose) some of the pipe was intentionally left exposed. Porsche covered the exposed parts with epoxy. Virtually every 911 is like that.

BTW, Thanks again for your hospitality the last time I was there.

Best,
Grady

[TechnoViking]

Thanks guys. Just thought I'd better make sure that was OK. Hope you are all around when I get into my 915 next week!