This looks like pretty good deal. I started online order and looks like the 15% off will work for 5 qts Mobil 1 @ $10.99/qt (code removes sale price of $9.99). $25 coupon on $50 or more purchase is mailed Julyy 11 but you can't use that towards oil
which would have made this a no brainer.
Effective price = $9.34/qt