Is Saudi Arabia stealing Iraqi crude via the Iraq/Saudi pipeline?

I recently became interested in the theory that the Iraqi Saudi pipeline (IPSA) was being used by the Kingdom of Saudi Arabia to pipe Iraqi crude to the KSA to be sold as Arabian light crude. I found a good summation here. I think its fair to say that somebody at a refinery would spot the chemical differences between Basrah light & Arabian light from the start, even though they are of similar gravity and sulfur content.

…I then thought, what would prevent the KSA from piping Iraqi crude to own refineries for domestic use, and can I find anything on the web concerning the IPSA. The IPSA appeared to be closed according to a number of sources, including the US State Dept, and the US Energy Information Administration. The State Dept presentation is dated January 25th, 2006 and it seems to contradict a number of other sources dated earlier that suggest the KSA portion of the IPSA was converted to Natural gas. What I do find strange is the exact same sentence is found at different websites. This of course infers a single source in the viral sense of the internet, though I was not able to track down what I thought might be the initial source.

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