Ha ha, I've had a box full of those big crappy chrome spin on filters and have used them on and off for years, I put one on, it leaks, I take it off and replace it with a better "brand name" filter, then a year or two later I forget and put another one on, it leaks, I take it off, and so on and so forth. If you can get one that doesn't leak, use it by all means! Cheers, Terry.
Next time you use one put a little clean oil around the o-ring and and try not to over-tighten the filter....
That should help.
Thanks mate, I've been doing oil changes on various vehicles for 40 years now, (and CB750's for 33 of them) and you're right, a light smear of oil around the seal is the way to go, but those filters that I mentioned must have been built on a Friday, they were rubbish, but if the ones in the pics don't leak, that's great, I might buy some myself. Cheers, Terry.