Subaru Forester Owners Forum banner
21 - 24 of 24 Posts

·
Registered
2005 Forester EJ251, 2011 Forester FB25
Joined
·
186 Posts
Some of the lines look as though they are raised. Run your finger over them and if the are raised they are just casting marks as mentioned earlier. Can you look at them with a magnifying glass or a magnifying app on your phone. If they are cracks talk to Subaru as they appear to helpful compared to my experince here. I knew a person who worked at Subaru in the EJ engine days and he said they had a lot of problems with castings as some were porous.
 

·
Registered
2021 Premium
Joined
·
241 Posts
It looks like JB Weld epoxy. If it doesn't leak then relax and forget about it. I have used the stuff on oil pan leaks and they were permanently repaired.
 

·
Registered
2015 Forester 2.5i CVT
Joined
·
961 Posts
Looks like regular old cast aluminum that I've seen a million times, those are not cracks.
 

·
Registered
2015 Forester
Joined
·
259 Posts
The raised lines are likely from the mold. If there are very shallow cracks in the surface (like it appears you sanded out), those are called crazing and are often caused by cooling differences when the part is cast. Crazing is generally only a cosmetic issue.
 
21 - 24 of 24 Posts
Top