1. BR8ES is whats spec'd from the factory, your best bet.
2. it probably just need to be cleaned, or check the wires for connection. its a black w/white wire that has a quick connect right by the radiator. it works on a ground-kill setup, so make sure all your connections are clean.
3. whoever told you that is not so bright. i dont think there is anyway to get the octane to 111 without buying 111. around here its only6 a gallon, way better than using 89 bucks worth of STP booster, naw mean?
good luck to ya.