Changed oil & filter today.. Is this bad?
 

The filter glue was separated the top from the bottom. I don't know when it happened in the 3,000 miles since it was installed.

What brand filter is it?

I certainly wouldn't call it good, but the filter housing should have kept it pressed together to prevent any real damage or bypassing.

Definitely share the brand of filter.

Yes Diseasel 300 you are probably right about it being pressed together by the housing I didn't think of that. Filter was MANN PF1055/1X

I would not call it a major disaster, as stated the can holds everything together.

Remember, on a cold start the oil filter is being bypassed because the oil is too thick, this would be a far greater volume than any leakage on the current filter.

I wouldn't be too quick to condemn the manufacturer of the filter.

Consider how many hands could have dropped it before it even got to you.

An additional thought. Have you used any oil additive / flush chemical / diesel fuel at the last oil change?

Good thought, The only thing I can think of that may have compromised the glue is using a few oz. of Marvel mystery oil, and seldomly, Seafoam in the fuel tank with refueling. This could have by blow-by gotten into the crankcase oil.

A few oz ( 2 or 3 ) of MMO isn't likely to cause a problem. . . or produce any benefit.

The fuel additive isn't a likely source of problem due to the dilution rate in fuel and amount that would make it's way to the oil and be diluted again.

That's a Mann.

If the rubber seals were intact on the paper element portion of the filter there should be no issues.

What goes through the upper part/bypass section of the filter goes back into the crankcase.

Supposed to say, that's a Mann, baby. /austinpowers

The filter element looks far too small for housing, what engine?

I’ve seen that on many oil changes

I use Hastings now...

That's a normal sized filter for cars earlier than your '96.