Nobody can answer this question, because nobody knows what the price of a barrell of oil will be in the short/medium term.
If you stockpile now, and if the price falls to 90-100 dollars a barrell soon as some optimists think it might, you'll lose.
If it rises to 200-250 a barrell as some pessamists think it might, then you'll gain.
One thing we know for sure is that some time in the future (10 years, 20 years, maybe 50 years), the price of oil will skyrocket, as we pass the much documented "Peak Oil" phase, and supply no longer meets demand.
When this happens, the current price of oil will look very cheap indeed.