I've seen advertisements as well. Seems fairly new, or at least fairly in terms of advertising online. Not previously heard of them and little to no info from previous forum posts. Would need yearly applications AFAIK so I think that put me off. It's not like theres loads of room to work under the car unless you've got a proper lift. So having to constantly apply put me off. Be good to hear a review, specifically from a e85/e86 owner.