Um, I may be a dumbell. Small oil filter O-ring

[11Rider]

Hi guys, I did an oil change last week and figured I had one thing off my mind. Then I happened across a thread that pointed out that there's a small o-ring that goes on the big bolt. I don't remember seeing it and I know for a fact I didn't change it or put one in. Should I drain the oil and check or is this o-ring not a big deal. I have a feeling I'm going to end up draining it to check.

[DAVINCI]

If it ain't leakin, it's probably in there.

[CatatonicBug]

It's ok. It's an easy one to miss. Just remember for the next time, and you'll be fine. It should have been in the box with the filter and the large o-ring.

[cywelchjr]

+1 on if it ain't leaking it's fine. I changed mine 1 time in 4 oil changes, it's the only time I even got a replacement with the filter, the rest of them didn't even have the small o-ring included. In all the years I've had my XS400 I've never changed the small o-ring on it, and it's never leaked there even a tiny bit. Got 50,000 miles on it now, still has the original o-ring in there, although I will probably put a new one in there when I rebuild the engine.

[11Rider]

Thanks alot guys, you saved me from changing fresh oil. So the function of the small o-ring is just to keep it leaking from where the bolt goes through the oil filter cover??

[bikerphil]

Thanks alot guys, you saved me from changing fresh oil. So the function of the small o-ring is just to keep it leaking from where the bolt goes through the oil filter cover??

That is correct.