Stations in Oklahoma typically offer 87/89/91 while stations in Texas typically offer 87/91/93. Octane ratings as low as 85 can be found in other states (Utah), and some states leave it up to the station (so it could vary from station to station).
Message Posted: Jun 26, 2013 2:52:18 PM
Some stations, though rare, offer 5 different grades (ie: 87/88/89/91/92).
This change would help users who live near a state border or in an unregulated locality to compare like-for-like.