I followed instructions and sent in a rebate form with proof of purchase to Penzoid for the rebate. They sent me a card saying my request submission did not qualify for the Penzoil Ultra Walmart $5 shell gift card offer. Limit 2, so I bought 2... That's $10 rebate. What can I do?... except to say Penzoil cheats on their rebate offer for a few dollars. I will never buy Penzoil oil again!