I saw a post from @gio, not sure where of course, and he does the same thing as I do.
I use boiled linseed oil on my rosewood fretboards and lemon oil (without silicone) everywhere else. I buy these by the litre from Lowes or Home Depot for a fraction of the price of anything from a music store. Last purchased over 20 years ago.
As somebody said previously stay away from vegetable oils because they go rancid over time.
Just my preference for the last 50 years and no problems.