Originally Posted by
nabobw
You do oil the 6600 under the bobbin case but only when the felt or whatever it is turns white.
I was never told this! Mine has never turned white. I oil it more often when I'm using it a lot, and very little when I'm not using it that much. I've had mine for several years now. I sure wouldn't wait until the pad turned white! Maybe they changed the fabric of the pad......?