The manual of my Explorer2006 4.0L recommends 87 octane gas. I have been using 90 octane for over 3 month now. Could this cause any problems (in the long run even).
Will using 93 octane cause problems. Should I stick with the recommended 87 gas even though the higher octane gasolines are cleaner and smooth out the ride?
Saturday, January 13th, 2007 AT 4:51 AM