New "you know you drive an xj when"
CF Veteran
Joined: Dec 2011
Posts: 1,050
Likes: 2
From: Roanoke, VA
Year: 1990
Model: Cherokee
Engine: 4.0
I usually average 15ish, but its hard to tell the longest drive i do is 22 miles every few days mostly interstate miles so eh...plus gas is like 3.09 right now here so im not toooo too worried.....yet
I've gotten close to 20 I think, but that was right after new, oil, filter, sea foam, 93 o, air filter, plugs, wires, coil, and o2 sensors (stock hight and 27" tires)
CF Veteran
Joined: Dec 2011
Posts: 1,050
Likes: 2
From: Roanoke, VA
Year: 1990
Model: Cherokee
Engine: 4.0
Originally Posted by 77olds
These engines are not designed for higher octane fuels, running 93 does nothing.
Originally Posted by Trev1006
By FULL tune up I mean down to using sensor safe cleaner and cleaning TB and associated sensors. Also sea foam into intake and fuel.
Member
Joined: Sep 2010
Posts: 220
Likes: 0
From: little rock arkansas
Year: 1999
Model: Cherokee
Engine: High output 4.0L with torque header
Originally Posted by 77olds
These engines are not designed for higher octane fuels, running 93 does nothing.


