funny , i used to work in the oil industry ... if z was doing so well why is there share price crashing? maybe oil price does have a little to do with it over the short term. i suggest you read up on it .... there is a certain amount of production that is influeneced by trhe price of oil. they buy oil and send it to nz refining. sometimes nz refining wears the cost sometimes z wears the cost
i havnt the time for silly debate it averages out over time