Shell Rotella 1 is a straight-grade oil offered in SAE 10W, 30, 40 and 50. Shell Rotella T3 is a CJ-4 oil designed for fleet applications and available in 15W-40 and 10W-30 grades.

Instead of changing your oil every 3,000 to 5,000 miles, many drivers can safely stretch it to 7,500 to 10,000 miles with the right synthetic blend.

Repsol, the Spanish-based oil giant, is using a special high-end computer processor used in Sonys PlayStation 3console to hunt for oil in the Gulf of Mexico "- and feeding back the results to help ...