Probably overly worried here, but I just realized the imbecile @ the gas station filled my tank with regular instead of super, which I asked for.

(We can't pump our own gas here in NJ - another story)
Is this going to be a problem? Thankfully, it was only a half-tank, so I guess its like a 89 or 90 octane blend in there now. 1/2 regular, 1/2 super.
Thanks