Thanks for the welcome and info Jim,
So, what are my options for an oil filter, was just searching and cannot find any oil filters, or o-rings to replace them with. I read about making an adapter, but I have no tools nor skills for that. Is there a way to modify with existing parts, or a good substitute? I read this on RealClassic.co.uk, "There is a more pressing problem for XS500 owners, and that's fitting the oil filter. This part has been modified several times over the bike's production span, and getting the right one for your bike can be tricky, as Andy can confirm. 'The oil filter cartridge is a nuisance. The original one tucked under the sprocket cover; the following part is taller, but it did just fit if the balancer cover was lifted (which was a good idea anyway - you need to check the chain regularly!), but the newer filter still is now 3mm too tall. So now you need a hammer to fit it!' (Yamaha also made an adaptor kit to let owners use the filter from the FZR600)". So which filter can you use? And has anyone used the adapter from a FZR600? Thanks again......Jay