Yesterday, I applied Old English Lemon Oil liberally to the worn, scratched, dinged cedar top on my "vintage" Seagull Artist Mosaic QII ... and it did wonders for the appearance of the top.
Of course the scratches and dings, etc. are still there, but the lemon oil removed all the grease and grime that had built up in the scratches and crevices and made the various imperfections much less prominent and and more importantly, the wood itself seems much "healthier" now ... the aged cedar has a nice warm "glow".
NOTE: I have no stock in the Old English Company and I only know what my particular experience has been, but if you have one of the older Seagull's with a cedar top that is beginning to look a little "dry" and "faded", you might want to give lemon oil a try.
Totally agree about the Old English Lemon Oil.
First time I've heard about Murphy's on a fretboard, however. Will try it next time I re-string.
I've read and heard from several sources that you should never, ever, put any kind of oil or wax on a guitar top. It adds mass, thus impeding the top's vibration. I believe this is even pointed out on the Seagull site.
There are dozens of opinions on almost everything having to do with acoustic guitars. I wouldn't suggest oiling a guitar with a nice new finished top ... mine has seen a lot of mileage and was scratched, gouged, and dried out. It was badly in need of some "nourishment" ... however ... if you read their literature or listen to the folks from Taylor, they say they actually apply Turtle Wax to the top of Taylors that come back to them for service, so opinions definitely vary.
Click here and go to the 5:24 mark ... Putting Turtle Wax on your Taylor?
Wow, never heard that. I suppose if you keep the amount used to a minimum it wouldn't impede the top's vibration.