So Does anyone else use one of these? http://peteshobbies.com/prcp/Greaser...uy_greaser.htm I got mine for RC helicopters and havent really heard mention of them in the car crowd. I use some lubriplate electric motor grease and always put the cleaner side of the bearing down so it flushes grit out...not in. Amazing what comes out of these little guys and you really don't even need to mess with the shields just use moderate force and be patient while the grease moves through. If I get a real gritty one I grease/soak in solvent/regrease and you can really bring some of these guys back to life, and makes things in general a lot less sloppy than the factory pack. They do get rid of some grease after initial spinup, So if they are somewhere I'm worried about the mess or attracting dirt I spin them up on a tapered stick in my cordless drill before install. I'm obviously pretty happy with this thing. Todd