Small Crack Discovered While Doing Oil Change

[pmedicj]

Just checked my 2026 Pro with 500 miles and it appears I have a similar mark, Hoping it is just from casting.

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[Snaker]

Ok! If there is no defect, can you take a picture so I can go to another dealership with a reference on what it's suppose to look like? That way, they won't give me the BS about it being a casting mark.

 

[Snaker]

Just checked my 2026 Pro with 500 miles and it appears I have the same mark.

Is that a bump out or a dent in?

 

[morsk]

I seem to have a few marks/“scratches” in that area as well, most of which are superficial. Only the one circled is a little “deep,” but honestly, it doesn’t feel very deep at all. Pretty sure these are casting marks on mine, but I’m curious what others think. Totally outside of my wheelhouse

 

[NotApplicable]

My attempts at capturing the area without removing my skid plate

 

[127.0.0.1]

well hot damn.... casting marks.

 

[Snaker]

Wow that's actually crazy. I doubt this is gonna be the last time we see those marks that look like cracks. I really appreciate you guys helping me out and now I don't have to worry about this vehicle being unsafe to operate!

 

[pmedicj]

Is that a bump out or a dent in?

Looked again with different light, it’s a bump out. Casting marks

 

[Joe Dirt]

Update: So I went to the dealership and they asked me to point out the area where the crack is. I showed them and they called over 2 master technicians to examine that area. They determined that it is a casting line since most cracks start at the edge of the part and not the middle. However, I don't believe them because a casting line is supposed to bump out and not dent in and have a bunch of cracks splitting off from the main crack. Can someone please take a picture of their component so I have proof that my vehicle has an issue (or proves that it is indeed a casting line)?

take a small file and file that casting mark smooth with the rest of the diff. Any line should just disappear into the body of the casting. If you still see a hairline in there then most likely is a deeper casting or a crack. Just my two cents

 

[127.0.0.1]

you have a point. proud casting marks are fine...ignore them or file them down...
but recessed ones means there may be more cavities internally, or more depth to
the imperfection.

 

[Snaker]

take a small file and file that casting mark smooth with the rest of the diff. Any line should just disappear into the body of the casting. If you still see a hairline in there then most likely is a deeper casting or a crack. Just my two cents

I am worried that if I do that and it turns out it is a deeper crack, the dealer might say that my action voided the warranty.

 

[Joe Dirt]

I am worried that if I do that and it turns out it is a deeper crack, the dealer might say that my action voided the warranty.

you're absolutely right let them figure it out.

 

[clk55r1d3h]

Those don’t look anything concerning to me at all. I’m pretty sure I’ve seen those on other vehicles all the time without giving a second thought.

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