Walmart Rollbacks on Castrol SYNTEC Oil Change Just $49 until September 9, 2010 Walmart is rolling back prices on full synthetic oil change featuring Castrol SYNTEC - That's over 10% off the regular price of $55.

The 2010 Castrol SYNTEC Top Car Challenge Enter For Your Chance To Win $10,000 Cash! 6 Street Cars Compete Head-2-Head To Become The 2010 Castrol SYNTEC Top Car. Cast your vote and enter for your chance to Win $10,000. See the official rules for complete details.

Enter To Win The Castrol GTX High Mileage Trip To MLS Cup Sweepstakes Click to enter and learn More! Want to be at the MLS Cup this November? GTX High Mileage may have your ticket. One lucky winner will score a trip of the lifetime. Enter for your chance to win to today!* See official rules and regulations for complete details.

DOWNLOAD THE CASTROL EDGE iPHONE APP Let your dipstick do the talking Download the EDGE app for your iPhone or iTouch

CASTROL WINNERS — PAST SWEEPSTAKES AND CONTEST WINNERS Previous promotions winners See previous winners of Castrol Contests and Sweepstakes