So I had an idea...I've read on here that you can email an oil company and get OC stickers, so I decided to conduct a little experiment. I emailed them all lol...Pennzoil, Valvoline, Havoline, Castrol, and Mobil, just to kind of test their customer service... I did this Tuesday night and woke up to an email from Ashland saying they had some on the way. Castrol emailed back a few hours with a link of where i could buy some (no thanks). Haven't heard from anyone else. Does anyone have any positive experience with this?