Thanks.@johan is 100% correct.
Finding pure Tung Oil in SA is difficult and if you want some I'll dig out a manufacturers details for you,I don't use it because of the drying times involved and you have to apply it very correctly,I prefer pure Danish Oil.
I wouldn't (wax) polish an oil finished Reo but thats just because of personal preference and you should bear in mind that if you polish it with a wax thereafter its not worth trying to use an oil again unless you get all the wax off/out of the wood.
Heres a link where the man himself advocates oil onlyhttps://www.e-cigarette-forum.com/forum/threads/oil-vs-poly-lacquer-finish-on-woodvils.350814/
Tung Oil, Danish Oil, or sorts of oil available here, but no mineral oil.