Oil filter questions

[midwest]

So I grabbed the wrong oil filter today. I normally run WIX 51061 but grabbed 51060. I put it on and it tightened up fine, so I didn't even realize it until I grabbed the box to throw it away. I did a quick search on Google and it showed a different thread pattern which had me confused because it screwed on just fine. I had started the truck and let it idle for about 5 minutes and no leaks. I am assuming I should pull that filter off and get a 51061, but I feel like if this one was a completely different thread pattern it would not have easily screwed on and would have been leaking???? I also assume there is no trick to getting this filter off and a new one on without loosing quite a bit of my new oil?

 

[Chevy 88]

I would think that running the wrong filter would probably be OK, but I would take it off and put the proper one on.

 

[midwest]

Forgot to mention it’s a 1977 350 engine

 

[Hilllbilly]

You are fine leave it on. Many prefer the 51060
Has nothing to do with thread pattern

The 51060 has the anti drain back the 51061 doesnt.

 

[fast 99]

drain back valve only matters if the filter is horizontal or close to it.

 

[midwest]

Thanks for the info.