Must be a problem with the newer engines because my 18 with 53,000 miles runs like a scalded cat and I literally put the cheapest crap in it I can buy!I dumped some of the lucass magic oil in the tank. It took a few miles but now it's mixed in well and a definite difference is felt . Of idle it would have some jerking (torque spikes)and u could hear some pinging . Cant hear it no more ...and finally of idle accel is smooth. 87 octane is definitely not good for our cars . The spark advance is too much and possibly running lean also. So my advice if ur going with low octane pour some octane booster the fuel spark curve will work much better. And yes its bone stock
Maybe I do get questionable gas and should change stations but i've bought from others in my travels, always the low octane, results were the same. Just drove again while ago and to me theres improvement however I still hear an almost inaudible pinging a low rpms.( have to have window open and listen up close) If u were to run ac or closed windows one would definitely not hear this. This happens on many makes not just Jeeps. My honda used to do this.. The solution was backing timing off or add the mystery oil in the tank either worked. It's a really scary sound when u hear rod bearing smacking journals from under the hood.Must be a problem with the newer engines because my 18 with 53,000 miles runs like a scalded cat and I literally put the cheapest crap in it I can buy!