Here you go - from my Youtube channel. The video is a bit dated now as I currently use the Paypal refund your return shipping trick. I've posted here/there are threads here from me that always get shut down b/c folks here can't manage for some reason that this isn't wrong or unethical etc. FCP literrally tells you how to do it on their website/their Youtube channel. One of their folks is a regular on one of the VW FB groups and encourages it/tells you how to do it. They do this on any item they sell sans additives or things that are fully consumed. The trick is obvisous - it's a marketing game that you think you'll take advantage of it but don't b/c there is a PITA invovled (just like a rebate), you end up not keeping the vehicle long enough to ever need a replacement, and while you are there be-boppin' along with your shopping you buy a bunch more stuff. Meanwhile, folks here are making up addresses to get more rebates - you can't make it up. I've used it for my wipers, cabin filters, and oil change kits successfully for a few years. I will be doing brake rotors soon. The other trick is to use Paypal to buy the stuff then you can submit your return shipping receipts up to 12x a year (and max $30 per) for a full refund. Great deal for those that want to do it. Oh yeah, and yes, you can ship used oil, it's not a haz waste base on its flashpoint but you *may* get some USPS employees that don't understand. I use a small rural post office and they don't ever care. Not sure how UPS/Fedex deal with it.