These forums are weird. In rereading our posts 7 and 9 I can see how you read me as being 'confrontational'. I've never been good in people skills, I'm good at whanging on my computer and I let my wife handle 'people'. Far from intending to be confrontational, I was trying to con you into checking my work for me for free.
I'll try again (I may not be good with people but I am persistent)..
I used historical oil prices, and divided the price by the cpi (click here for the data I used). I used quarterly data and the article apparently used annual data, but the outcome is roughly the same, that whatever we got now with oil prices is a lot bigger in the news than it is at the pump.
Your reasoning seems sound. Their numbers rely on "implicit GDP price deflators", and yours on CPI, but that's less apples to oranges than "golden delicious" to "granny smith". Both are price indices. Good enough.
I am not an economist, but I play one on FR--you get what you pay for here!