Motor break in
Senior Member
Joined: May 2011
Posts: 609
Likes: 2
From: Flagstaff, Arizona
Year: 1998
Model: Cherokee
Engine: 4.0L I6
To my understanding you need to vary the revs below 3,000 for the first 1,000 miles then do some heavier driving. No burnout or pulls but a little harder than before. Do not drive at one constant RPM. And wait until 6,000 miles to change the oil. I'm sure someone can add to this or clarify a bit.
Junior Member
Joined: Jul 2010
Posts: 54
Likes: 0
From: Fargo ND
Year: 1994
Model: Cherokee
Engine: 4.0
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