The word(s) "oil" appears 41 time(s) in 39 verse(s) in Quran in Muhammad Pickthal translation.

(31) And thereon ye will drink of boiling water,

(32) Then the welcome will be boiling water

(33) And that which Allah gave as spoil unto His messenger from them, ye urged not any horse or riding-camel for the sake thereof, but Allah giveth His messenger lordship over whom He will. Allah is Able to do all things.

(34) That which Allah giveth as spoil unto His messenger from the people of the townships, it is for Allah and His messenger and for the near of kin and the orphans and the needy and the wayfarer, that it become not a commodity between the rich among you. And whatsoever the messenger giveth you, take it. And whatsoever he forbiddeth, abstain (from it). And keep your duty to Allah. Lo! Allah is stern in reprisal.

(35) When they are flung therein they hear its roaring as it boileth up,

(36) Save boiling water and a paralysing cold:

(37) Toiling, weary,

(38) Drinking from a boiling spring,

(39) So when thou art relieved, still toil