Demand for polyalphaolefins has boomed this year and last, both buyers and sellers say. We saw demand in 2010 come back strong, right after the 2009 recession, and this year has been even stronger. Its back up to where it was in 2006 or 07, but supplys very tight, one Houston-area seller of the synthetic base stock said last month. Its hard to get. Really hard, echoed a lubricant blender from the Midwest. Eventually I can get what I want, but the cost is very high.