moreira72
Member
I purchased a 2004 Navigator a few months ago and it has been running great. I recently fueled up and the attendant filled with 87 regular instead of 93 super. The Navigator Requires Premium. Now I have a Reduced engine Power message at highway speeds going uphill. I haven't burned through that fuel yet. Still have about 1/4 tank of the 87 octane left. Is the message due to the lower octane fuel? TIA