Looks like this coupon is already out of prints! They might bring it back again since it ran out so quickly and if so, I’ll make sure to repost it for you!
There’s a new printable coupon available to save $2.00 off of any STP Product. Many Walmart stores sell products for as little as $1.97, making them FREE after the coupon! STP Gas Treatment, $1.97
$2/1 STP Product printable coupon
Final Price: FREE!!! Remember that prices vary from store to store, so you may see slight differences where you shop. Thanks Coupon Geek!