Your task is to go through all the doors and get the oil can in game

Pirate’s Treasure: First, if you’re in Varrock, then buy yourself an apron at the Clothing Store for 2gps. This way, you won’t have to get World Of Warcraft Gold yourself one when the need arises.

Head to the pub in Port Sarim and talk to Red-beard Frank; tell him you are in search of a treasure. He’ll ask you to bring him a bottle of Karamja Rum.

Get 30gps and talk to one of the sailors in the port. Ask him to take you to Karamja. Once you arrive in Karamja, talk to Zambo in the house west of the ships. Buy a bottle of Karamja Rum.

The next half of this quest is complicated so read on slowly. Once you’re down the ladder, you’ll see that the basement is kind of like a maze. Your task is to go through all the doors and get the oil can.

Load up the crate in front of his house with the bananas. Also be sure to put the bottle of rum in the crate as well. Once you’ve done this, talk to Luthas for your 30gps.

(You have to put the bottle of rum in the crate because you won’t be able to carry it with you when going back to Port Sarim.) Then talk to him again and ask him where the bananas are going.