When most people think of oil, they think of light, sweet crude that comes up out of little holes in the ground. You describe oil by its API gravity. For example, oil like Brent crude or West Texas Intermediate has an API gravity of 38-40. The oil that Col. Drake pulled from the ground at Titusville, Pa., in 1859 had API gravity near 60. These types of oil are relatively easy to pump from a reservoir, lift to the surface and transport via pipeline to the refinery.

Horacio Marquez says the credit crisis is giving investors another chance to profit from Brazil’s long-term success story. The country is rich in natural resources, has a solid banking system, and a strong economic outlook. He recommends buying the iShares MSCI Brazil Index (NYSE:EWZ) in increasing increments over the coming 8 weeks.

It’s been a volatile year for crude oil prices. After touching above $147 a barrel in July, the black goo is trading back below $110 a barrel.

Don Miller says industry insiders are now betting on triple-digit crude oil prices for the next decade. And long-term oil futures show demand will continue to outstrip supply, as Asia industrializes and proven reserves diminish.

Don says Transocean Inc. (NYSE:RIG), StatoilHydro ASA (NYSE:STO), and Petrobras (NYSE:PZE) are likely to benefit from new drilling projects. And the company that supplies equipment lines for 90% of oilrigs, National Oilwell Varco (NYSE:NOV), is also well placed for profits.