I have a ‘15 ram 6.7 with an Aisin trans 4x4 longhorn 93000 miles.

It has not been deleted yet. I’ve been waiting for the warranty to run out.

I noticed a couple of days ago some specs of white residue on the exhaust tip.

Now it is all the way around the lip.

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What should I be looking at or checking to be causing this or is this normal?

I’ve never seen it, but I’ve never actually paid attention.

The truck runs good and strong no hiccups.

I just trying to make sure I stay ahead of things.

Thanks for your help.