OK so I was concerned about making sure the fretboard was properly preserved and was getting to thinking... read posts about bore oil and lemon oil. Neither seemed that approved by manufacturers. I read about Nose Oil .... I know that works for fishing... so then as I was greasing my hair one morning with this 'ethnic' hair grease I have, I got to thinking... hmmmm vaseline is the right thing to grease a fretboard with maybe.... and I googled it ... and lo and behold, some guitar manufacturers recommend after cleaning fretboards to use a little vasoline on them!!!!! I was like... 'oh I reckoned that'... am curious about thots on this topic?