2014+ Jeep Cherokee Forums banner

6 cyl-what type of gas?

8560 Views 30 Replies 20 Participants Last post by  cobra7
Hello everyone,

Two weeks ago I ordered a Cherokee limited with 6 cyl engine. I see the owners manual recommends 87 to 89 octane with preference for 89. For those of you who have the 6 cyl engine what are you using?


1 - 1 of 31 Posts
I am willing to bet that unless you are towing, off roading or rock climbing 87 is fine.
If I tow then I'll use 89 to be safe.
Octane should not affect MPG in the Cherokee's case.
That's what I would do.

The only way 89 is going to improve performance is if 87 is causing pinging, in which case the detonation sensor is going to signal the ECU to retard timing, decreasing engine output and performance. Outside of that, no one will see ANY difference.

Now, if the price were negligible, I would use BP 89, but only because it isn't mixed with ethanol at my local station. But the price difference isn't negligible.

Sent from my SPH-L710 using Tapatalk
1 - 1 of 31 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.