American Express is offering a One Time $5 Statement Credit with $25+ Purchase at Shell Oil. Offer valid thru July 31st. Thanks jordi22Click here and sync your Amex card to your Twitter accountFrom your Twitter account, tweet #AmexShell to add the offer to your syned Amex CardNote, be sure that you receive an "@ reply" message from @amexsync stating that this offer has been added to your synced CardMake a single purchase of $25 or more by July 31, 2012.A statement credit should be issued within 3-5 business days after your qualifying purchase