Can anyone tell me which gas to use in my 2008 Night Rod. I bought it at the dealership and got different stories. Regular unleaded or premium?

 

Premium. It's a high-compression engine and needs the octane... although Ethanol acts like a retardant, so maybe with all the crap they're putting in gas these days you could get away with the middle grade. But I believe 90 or 91 is recommended.