^Exactly why I asked and had concern w/ the product explanation. I'd hate to blow a newer engine b/c of a fuel additive. Then again, I don't run any additives, except moving up to 91 octane for 2 tanks in a row every 10000mi. I know on my 3vze and even with the 5vze if you run too clean a fuel for too long (like 91 octane for months and months) the injectors start to rattle b/c they're "too clean" as was put in a tsb. Not sure how it'll all play out w/ the newer stuff though.