If the manual says 91 then use 91.

Sure it may have a knock sensor, but your engine won't be running as it
should. ie. less power, etc

Also your only saving about $4.00 ish a tank of fuel. If that's going to
break the bank then maybe you shouldn't have bought a new vehicle..


"Laura M" > wrote in message
om...
> We just bought a 2005 Honda Pilot. We've only had it for 4 days but
> we love it! I've heard discrepancies as to what type of gas to put in
> it. The owner's manual says a minimum of 91 octane, but I've heard on
> different websites that regular gas is okay. Does anyone know for
> sure?
>
> Thanks!
>
> Laura M.