An oil tanker would be carrying crude oil, not refined product. So the answer would be zero.
liquds like oil
get lost it carrys 0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000.1litrs
An oiler. a tanker
a tanker
Most large oil tankers simply carry the oil from one port to another or from an offshore installation to a depot.
Road tankers are large lorries that carry large tanks that can hold bulk liquids or powder. A milk tanker will carry milk. And an oil tanker will carry petroleum products - petrol, diesel, oil, etc.
Many different chemicals are caried in tankers if they need to be transported in large bulk amounts. Every thing from petrol to acid to toxic wastes of various descriptions as well as both flamable and non flameable gasses.
A ship constructed or adapted primarily to carry oil in bulk in its cargo spaces and includes combination carriers and any chemical tanker. --Jayant Negi
About twenty people are believed to crew an oil tanker in any given oil company. This however depends with how big the company is.
Normally a Tanker carries some liquid, mostly Oil, therefore the term "Oil Tanker".
2,000,000 barrels.