Pull up a chart of CL and then compare the charst of the ETFs with that. Choose your time frame. It's not rocket science....
CL is the ticker symbol for Colgate company. Is there a way to pull the historical crude oil price chart in yahoo finance?
http://quotes.ino.com/chart/?s=NYMEX_CL.J10.E&t=f Home > CRUDE OIL Apr 2010 (NYMEX:CL.J10.E) Futures contract