Oil is currently trading around the 0.13 fib of our latest untested swing down. The 0.13 and 0.886 fibs, respectively, are often the last chance for price to hold a level and make a higher low/high. Here, Oil could find support around $20.5-$21, which would make a nice higher low. If Oil goes below this swing, then I would look to buy lower, around $18-19.