Free with Rebate in Advance Auto
I hope this isn't advertising, but I participate in this program whenever they come out with something.
Every month or every two weeks or so, Advance Auto has some products that they'll give you for free. You have to pay at the time of purchase, but then you fill out their rebate card, attach a copy of your receipt and also your UPC barcode from the item you bought, send it in the mail and they send you a check (mail in rebate).
They had discounts on other items, but what I got this month was two wax-as-you-dry products from Eagle one (I think, but could have been someone else) and two Prestone Synthetic fuel injector cleaners plus 0-60 booster. I also got a free injector cleaner...I forget the brand last month and now the ones I just got will probably take me through to the end of the year without having to buy again.
Just thought I'd mention for anyone who likes getting free stuff!
PS: You HAVE to send the rebate request in by the deadline. For instance, the items I bought yesterday have to be postmarked by 10/30/05, else you get ZILCH.