I have one that I bought from a jewelry store in the mall. I use WD40, it cleans & lubricate at the sametime and it is so light it can go right thru the bearing seals wihtout a problem as well as breaks down dirt & grime very effectively wihout hurting the bearings. :thumbsup:
I have been using a Branson "Ultraionic Cleaner" for years and have found nothing better. STP fuel injection treatment works well too. The Branson was a little pricie but it has held up well now for about 10 years!!