Yeah almost the same here but no Danish oil.
. I've always used lemon oil on all fretboards and if they were really dry some mineral oil. Lately I've been seeing a lot of people saying that lemon oil is not good for your fretboard in the long run. I'm pretty sure the Dunlop stuff you're talking about is lemon oil or has lemon oil.
Actual lemon oil contains solvents which can actually harm your instrument with prolonged use.
I wouldn't put anything food-based on my guitars anyway. Risks rancidity and might even attract pests.
Most so-called lemon products for wood (furniture or fretboards) actually are lemon-scented mineral oil which is fine.
I used Formby's Lemon Oil for furniture on my guitars over a period of decades without any ill effects.
Mineral oil based; not sure it's made anymore. Still have half a bottle somewhere on the back shelf.
A few years back I switched to Fret Doctor bore oil; it absorbs quickly.
Today most players understand that oiling a rosewood board is really more a cosmetic treatment than a matter of maintenence.
And you don't need to do it very often, maybe every year or two, or when a board actually starts to look dry.
Ebony needs it even less often. Some say not at all.
I do my ebony boards with Feed N Wax anyway, but only at intervals of three to five years.
One thing about ebony is, it really needs to be kept well humidified. All guitar woods need this, not just acoustics.
But ebony is particularly sensitive - it shrinks more than rosewood if it gets dried out and that can cause serious problems.
Regrettably, I know this from costly personal experience.
Every guitar is happier when it's well-humidified.
IMO staying on top of that is more important than oiling your fretboards.
Of course those who dwell in humid climes don't need to worry much about it.