How can I remove tape residue on my surface treated with Oil Plus 2C?

If there isn't any discolouration, you can remove the residues with Grease Remover. Afterwards, most probably you'll have re-oil a bit with Oil Plus 2C in the original colour afterwards.

If there is discoloration, due to the plasticizers in the tape, use Limespot Remover. Here again, you'll have to re-oil with Oil Plus 2C in the original colour.

 

Tip: make sure you never use tape with plasticizers or softeners in. This will damage the Oil Plus 2C.