Oil has been trending higher since May 5th.  It was a classic reversal day in that it closed near the daily highs after being down big during the day, and as expected there was support around $43.  The low trade was $43.76.  There is support around the $43 level because it was the low in September and November.  Now resistance at $51 is being tested.  The $51 level has been significant since September of 2015.