I just picked this up. The Advance $15 rebate is good until Oct. 1. They didnt have the forms for the $15 Mastercard gift card (like cash), so had to go to Pep Boys and pick it up. It may be available at other auto parts stores also, but Pep Boys has it advertised in their store circular. It expires today (6-30).
Total cost was $28.85 - $30 rebates= +$1.15.
Dont know what people think about this, but I like making my own synthetic blend when changing oil. I mix 25-50% (1-2 qts) synthetic with the same weight dino oil. It "feels" good in my engine and hopefully does some good.