Lifetime Premium Member
Date registered: May 2006
Vehicle: 2001 E320 - Brilliant Silver/Ash: 107,000+
Location: West Virginia, USA
Mentioned: 0 Post(s)
Quoted: 6 Post(s)
Potentially there could be problem(s) with your engine. It is engineered to run on 91 octane and that is what I would use if I were you. As has already been implied on this thread, a 10 cents/gallon savings is meaningless when compared to what it might cost in engine repairs in the future.
One thought though: In my area, Plus is 89 octane and Super is 93. If that is true in your vicinity, you could save 5 cents/gallon by pumping half and half of those 2 grades.
Mercedes Benz - Das beste oder nichts!
Last edited by Musikmann; 05-12-2008 at 08:35 PM.