I just had a wix failure that caused the oil light on my subaru to flicker. When I cut it open, the bypass valve looked like it was deforming. I need to be honest though, the previous oil change had gone for almost 10k? Things happen, This oil change only had 2.5k, then light flicker. I honestly think the filter got plugged up a little. And then I used a microguard filer with 100% synthetic! lol, I'm a mechanic that just don't care. I'll either fix it or get a new one. One of my subi's is on it's third engine, their just so cheep and easy.

I was able to talk to a manager today, they didn't have much to say other than the Microgard is their cheaper line and suggested I buy a Wix next time.

Took the filter to O'Reilly today, there wasn't a manager on duty so the employee I talked to said they would leave it for the manager. I will follow up with them to see what they have to say about it.

This is good information. Thanks for posting!

The newer microgards are made by premium guard and are higher build quality look for the Chinese or Vietnam made ones

Did the filter have a bypass valve? I didn't see one on the bottom. Unless it is on the top?