Hey Rob,
It's difficult for me to advise on this without knowing your game well enough. Pete says it's a medium oil ball, but if you've you've got some hand or softer speed, it may be spot on for the big soup. Personally, I hardly ever get to see real oil unless we set it up for practice. Last time in a tournament was July last year at NSW Open.
One thing I can tell you is that if you are facing some real oil, then go with a strong arc drilling. You don't want the ball to skid too far. You can always move a bit left if there's some oil to move left into and you don't want flip on long oil, as this is what make the ball "squirt" or "wiggle" at the break point on carry down, which will happen on heavy oil.
Heavy oil = ball that rolls strongly but evenly. Almost always.
Hope this helps.
Jason