Inflation is an extremely fuzzy number.
It's rather difficult to get an exact point for the highest inflation adjusted oil price ever.
I think it's somewhere between $100 and $105.
We have either hit that point or surpassed it.
Inflation calculator
The 1980 price was $38 a barrel (if I recall correctly). In 2007 dollars, that's $107.21 according to this particular calculator.
Given that this price probably wasn't reached until midway through the year, the inflation adjusted price in 2007 dollars is probably in the $100-$105 range.
However, the gap between the highest price ever and the current price is tiny.
Another thing to consider, when oil hit its 1980 peak, the yearly inflation rate was extremely high. depending on what
month you use as your base year, the 2008 price could be very different.