B/c I return it for a full refund each time. B/c my time has a value vs. dropping off/picking up/waiting and of course, I know it's done correctly when I DIY. So one outlay of $70 for the Liquimoly kit or whatever they are now at FCP Euro then the rest are free so all-in my cost is much lower than buying M1 at Walmart etc. Dealer change with a tire rotation for me used to be $118. Just have a look at FCP Euro's site, their Lifetime Replacement, and google it. I use pirateship.com for my return shipping, it's not a whole lot and I combine with all my other crap I sent back for my 2 other VWs. If that's all too much of a pain in the ass, just grab whatever Euro approval oil at Walmart, should be about $45.
Here is my video on the subject: