FAIRFAX, Va. -- Mobil 1 and O’Reilly Auto Parts will be giving a NASCAR fan a once-in-a-lifetime trip to join the year’s top drivers in Las Vegas for the 2011 NASCAR Sprint Cup Series Champions Week.

The grand prize winner will receive a trip for two to this year’s NASCAR Sprint Cup Series Champions Week activities in December, a prize valued at approximately $3,900. There is no purchase necessary to enter or win.

The grand prize includes:

• Round-trip coach air transportation
• Four days and three nights hotel accommodations
• Participation in Meyer's Brothers Industry Luncheon
• Tickets to NASCAR Sprint Cup Series Awards Ceremony (a black-tie event)
• Exclusive meet-and-greet with a NASCAR personality
• VIP admission into NASCAR Sprint Cup Series Victory Lap and NASCAR After the Lap after party

Additionally, 50 first place winners will receive a NASCAR-themed custom men’s polo and 50 second place winners will receive a NASCAR-themed custom pit cap.

NASCAR fans can enter by visiting mobil1.com/championsweek through July 31, 2011, and by following instructions to complete the online entry form (name, address, city, state, zip code, e-mail address, date of birth and phone number, including area code) and submit as directed; or by mailing a 3x5 card in a No. 10 envelope to: Mobil 1 O’Reilly’s “NASCAR Sprint Cup Series Champions Week” Sweepstakes, P.O. Box 3144, Grand Rapids, MN 55745-3144.

In addition, fans can receive a $12 gift card, valid at any O’Reilly Auto Parts, with the purchase of five quarts of Mobil 1 oil. If they add a Mobil 1 Extended Performance Oil Filter they will receive a $15 O’Reilly Auto Parts gift card.

To receive an O’Reilly Auto Parts gift card, fans should send an original register receipt dated between May 25 and July 31, 2011 showing proof of purchase of five or more quarts of any Mobil 1 oil product (and, if relevant, Mobil 1 Extended Performance Oil Filter) to: Mobil 1 O’Reilly Gift Card Offer, P.O. Box 1115, Grand Rapids, MN 55745-1115.

NASCAR fans should look for in-store promotional items at O’Reilly Auto Parts stores or on the O’Reilly Auto Parts homepage at oreillyauto.com.

Certain restrictions apply. For full terms and conditions about this promotion and mail-in offer, please visit mobil1.com/championsweek or call 1-800-ASKMOBIL.

Mobil 1 is the Official Motor Oil of NASCAR, and O’Reilly Auto Parts is the Official Auto Parts Store of NASCAR.