How Often do I change oil?

Discussion in 'How To' started by Josueblonde, Feb 8, 2020.

  1. Josueblonde

    Josueblonde New Member

    Messages:
    5
    Likes Received:
    0
    Joined:
    Feb 8, 2020
    I just got my 05 liberty 3.7L 6cyl. How often should I change the oil if it has a synthetic blend?
     
  2. Shane Giggie

    Shane Giggie Full Access Member

    Messages:
    88
    Likes Received:
    15
    Joined:
    Nov 26, 2019
    I change the oil in my 06 every 7000kms or 5000miles. I just use conventional Castrol 5w30and a quart of Lucas oil stabilizer every oil change and it works good for me.
     
  3. LONGJEEPOWNER

    LONGJEEPOWNER Full Access Member

    Messages:
    179
    Likes Received:
    65
    Joined:
    Jun 18, 2013
    Location:
    NE Pa.
    I use synthetic Mobil 1 and I change my oil every 5000 miles.
     
  4. Kevin McKinnon

    Kevin McKinnon New Member

    Messages:
    5
    Likes Received:
    2
    Joined:
    Feb 5, 2020
    With a synthetic blend you should change it every 5000 miles. If you upgrade to full synthetic there are some out there that only need to be changed every 10,000 and Mobil 1 actually has a 20k mile oil as well. Changing your oil is the single most important thing you can do for any vehicle.
     
  5. ltd02

    ltd02 Comfortably numb KJ Supporting Member

    Messages:
    2,607
    Likes Received:
    153
    Joined:
    Aug 15, 2014
    Location:
    North Central Maryland
    just remember that, no matter what OCI you choose, make sure you check your oil every few hundred miles you drive. The greatest oil in the world won't help if you run it low!

    I go 3-5k no matter what level of oil I use.
     
    LibertyTC likes this.
  6. LibertyTC

    LibertyTC Well-Known Member Staff Member Moderator

    Messages:
    7,982
    Likes Received:
    806
    Joined:
    Oct 24, 2008
    Location:
    B.C. Canada
    ^ X2 Running low could = a very bad day. I keep an extra quart of 5w-30 in the jeep, and check level at every fill up.
    [​IMG]
    It is nice to see clean oil in the KJ. By 3-4K miles it is getting dirty, so I change it.
     
  7. Shane Giggie

    Shane Giggie Full Access Member

    Messages:
    88
    Likes Received:
    15
    Joined:
    Nov 26, 2019
    I do the same. Keep a extra quart in the jeep and check it every fill up. Can never be too safe not worth ruining a good motor because your too lazy to check/change your oil.
     
  8. tommudd

    tommudd Moderator Staff Member Moderator

    Messages:
    19,501
    Likes Received:
    1,128
    Joined:
    Jul 14, 2005
    Location:
    Southeastern Ohio
    Mobil 1 and the best oil filter every 3-4000 miles on the last 6 Jeeps I've owned in the last 27 years
     
    Shane Giggie likes this.
  9. Leeann

    Leeann Full Access Member

    Messages:
    2,397
    Likes Received:
    179
    Joined:
    Mar 9, 2013
    Location:
    Maryland
    What kind of driving do you do? Is it all city, all highway, a 50-50 mix of both...?
     
  10. Josueblonde

    Josueblonde New Member

    Messages:
    5
    Likes Received:
    0
    Joined:
    Feb 8, 2020
    Both
     
  11. Leeann

    Leeann Full Access Member

    Messages:
    2,397
    Likes Received:
    179
    Joined:
    Mar 9, 2013
    Location:
    Maryland
    I'd go somewhere in between 3,000-4,000.
     
  12. lfhoward

    lfhoward Full Access Member

    Messages:
    696
    Likes Received:
    455
    Joined:
    Dec 9, 2012
    Location:
    Philadelphia, PA
    ^^^ That’s what I do. I never go 6,000 miles between changes even though the owners manual says you can. The 3.7L in the KJ was never rated for that long, and the KK has the same engine.
     
  13. Shane Giggie

    Shane Giggie Full Access Member

    Messages:
    88
    Likes Received:
    15
    Joined:
    Nov 26, 2019
    I go 7000kms in my 06, I'm not sure what that is in miles.
     
  14. rice_rocket2004

    rice_rocket2004 New Member

    Messages:
    2
    Likes Received:
    0
    Joined:
    Jul 13, 2014
    Location:
    Montana
    I run Amsoil 5/20 w/ the Amsoil filter and I regularly run 15-20k between oil changes. 60k in on my replacement engine and the original engine had 269k and was still running, but I figured better safe than sorry since I'd been burning coolant for over 30k.
     
  15. LibertyTC

    LibertyTC Well-Known Member Staff Member Moderator

    Messages:
    7,982
    Likes Received:
    806
    Joined:
    Oct 24, 2008
    Location:
    B.C. Canada
    There is a reason why 3500 miles is a good OCI On the Jeeps.
    Oil works hard & the friction modifiers break down over time.
    Once oil is carbon & fuel contaminated, it thickens, and that's when the real worries begin.
    The #1 reason why lifters get plugged up, & then rockers fall off, is because of lack of friction modifiers & contaminates in the oil.
    Long OCI is a very bad idea IMHO.
     
    David13 likes this.