I was just reading all the documentation that can with my newly purchased 91 300E and came across a caution regaurding fuel requirments. MB says "To maintain engine durability and preformance, only premium unleaded gasoline (91 octane or higher) is to be used" it goes on to give a list of 4 precautions to do when using regular gas... no abrupt acceleration, mix with premium, don't exceed 2000rpm with a light load, don't push the gas pedal more than 2/3 if fully loaded.
Should I heed these warnings? How will regular gas effect engine duribility/longevity. Will reg. fowl injectors/filters/fuel pump?
I've been using regular gas because it's about 8-10 cents cheaper than premium.