Is this Normal, very rusty rear diff?

[NewSchool]

So I had my car in the shop today to have my springs installed. Looking underneath and noticed how rusty the rear diff is. I never had this problem on any of my S197 mustangs that I can remember.

Is this normal or should it be painted or something. Has anyone else seen this, or can you take a look under your car for me and check?

Thanks,
Scott

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[icarumba]

No worries: that's called "passivation", and is completely normal.

http://en.wikipedia.org/wiki/Passivation_(chemistry)

 

[Nemesys]

My 3 valve Mustang was like this. Nothing to be concerned about. Over time itll stop looking as bad and just develop a patina

 

[NewSchool]

OK cool. Thanks guys.

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