OK I will measurre the correlation between any contracts and see if it reflects the price in any way or it is just taken out of air price loosely connected to the price of oil in the real world.
I use MT4 SpreadBetting account and there is USOIL instrument...... what is this instrument based on ? What market I actually bet on ??
As I write this, April CME futures is around 107.30 , May around 104.12 and your "USOIL" is 105.10 !