I've mentioned it once or twice in relation to other threads, but get used to it. Hurricane Katrina means it will rise even further, and I wouldn't expect it to drop substantially. I realise you're talking about engine oil in particular, but have a look at
Life after the oil crash. Even if Matt Savinar is only 1/3 right, it's a nightmare. He's a proponent of the concept of Peak Oil, backed up locally by my friend who's a geologist, and globally by growing number of people.
Basically, geologists have discovered 95% of the world's oil reserves, and the rate of return has dropped from a return of 30 gallons of oil for every gallon expended getting the oil (1950s), to a current ratio of 3:1. When the rate of return approaches 1:1, it is no longer worth pumping it out of the ground, as there is no net gain. Which is bad, not just for people who drive a lot, but for mankind.
It's a little more complicated than I can be bothered going into here, but to put it in perspective, hydrogen (as a replacement for petrol via hydrogen fuel cells) is not a fuel. It takes more energy to create hydrogen gas for fuel cells than you get back in terms of energy. It is a pollution free way to power your car, and nothing else. It does not mean there is no more fuel crisis.
And further, hydrogen fuel cells have a duty life of 200 hours, so they need replacing on an ongoing basis. If all the cars in the US were running fuel cells, the worldwide stocks (in the ground) of platinum (their key raw ingredient) would last how long?
1 year.