Visual and certainly feelable cracks with the fingernail. Probably cut your finger if you tried. Most the cracks are vertical, none all the way through.
Thoughts? I'm going to bolt it back on

99 saturn sl2 dohc

 

Since those lines are vertical, I'm under the impression that it's just where the cover came out of the mold and you don't need to worry about it. BUT, I'm not a mechanic, so you probably need to get some more feedback.

 

Appreciate te feedback. Could have made a better picture... In any case, this post will be here if it begins to leak one day

Cheers!