The rebate is back on again. 5 Quarts -$11.88 AR + tax at Walmart. Promotion ends October 31, 2015. Yes, again Walmart is not listed as a participating retailer but Mobil will honor the rebate.
https://mobiloil.com/en/promotion/mo...uper#retailers
Online submission:
https://apfco.net/secure/R8235W/Home/Intro
http://www.walmart.com/ip/Mobil-1-0W...5-qt./17034374
If you have a Discovercard, link through ShopDiscover to Walmart, order online, pickup at store, and get 5% cash back.