Waste engine oil makes good preservative

[Muz]

If you have some wooden sheds or fencing that needs preserving, old waste oil does an excellent job if a little messy to apply. And you need some pretty absorbent wood for it to work well too, so that it dries in properly ... one colour only I'm afraid

[Dan]

one colour only I'm afraid

And flavour ............ second thoughts..... dont try that at home kids