When changing your oil, do you always change the seal out. Manual says to alway use a new one. I know there cheap but was wondering what most do. Just wondering.
If the parts guy remembers to include a new one with the oil filter I do, but there have been plenty of times that I reused the old one and never had any issues.
If the old one is deformed,or won't come off the drain plug easily, or if it has a lip you can feel with your thumbnail, then of course replace it, and yes they are cheap, you can pick them up at Honda car dealerships for about 30 cents apiece, if you bike dealership is one of the ones that charges a buck for it.
you do not have to replace it unless it looks rough, you should not have any problem. It would not hurt to change it maybe after 2or3 times....just my 2 cents about the cost of the 14mm crush washer.

I use the other side and after 2 oil changes I will use a new one.
When I get an oil filter I'll buy several and replace the seal if the old one looks deformed.
Thanks guys....was just wondering. Getting ready to change the oil and forgot to get one.
In the "old days" they would tape one to the box the new filter came in. Just saying.
I have reused the washer many, many times on my bikes before replacing it - probably at least six reuses, and the engine has never leaked a drop.
Ok, I'll be the one to pit it out there this time....why wait another 4-5 pages for someone to do it.
A friend of mine put 150000 miles on his wing with no washer at all and never had a problem.
YMMV