Re: 930 miles and Check Engine Light
Originally Posted by jp467
Not really. The minimum is 87 and 89 recommended so running anything higher is a waste and could actually hurt performance because the engine controls are tuned for 89 not 93.
Thats almost word for word from the manufacturer, If its good enough for Jeep engineers it's good enough for me. I ran 89 in my 2005 and i am running 89 in my 2014.
Overland 4x4, True Blue w/Indigo Blue/Brown Leather Interior, 5.7 liter, Advanced Technology Group, Off-Road Adventure II.
AAC /Stop, entry exit on park
You never forget your first 2005 WK, Limited 5.7 L Hemi off road package.