up for sale is a coupon for a free case of 6 quarts of penzoil platinum synthetic oil in any weight you need. also included are 2 $10 off coupons good for 2 additional cases and 2 $10 off coupons good for oil changes w/penzoil platinum at any oil change facility. coupons expire 2/29/08. $70 value in coupons alone with the free case coupon worth at least $30. looking for $23 shipped/obo.