cracks in rocker

[coatesy]

when i was cleaning the car today and giving under the bonnet a wipe, i noticed some cracks in the rocker cover this a bad thing, there not major cracks i have a picture there where a few more in another couple of places.

 

[Alais DJA]

Can't imagine it being a good thing....

Dosen't look like it's penetrated through the metal though, just surface