Product review (4 stars): Not sure where the lubricant is?
The last time we replaced our filter we used the Samsung brand filter from the big box store and spent over $50.  At half the cost this filter seems to be as good as the brand name.  The only confusion we had was in looking for the lubricant the instructions refer to.  I couldn't find it, but installed the filter anyway, we will know soon enough if I can't get the filter back off when it comes time to replace it again.