How Often do I change oil?

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

  1. Josueblonde

    Josueblonde New Member

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    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

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    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

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    I use synthetic Mobil 1 and I change my oil every 5000 miles.
     
  4. Kevin McKinnon

    Kevin McKinnon New Member

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    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

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    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.
     
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  6. LibertyTC

    LibertyTC Well-Known Member Staff Member Moderator

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    ^ 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

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    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

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    Mobil 1 and the best oil filter every 3-4000 miles on the last 6 Jeeps I've owned in the last 27 years
     
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  9. Leeann

    Leeann Full Access Member

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    What kind of driving do you do? Is it all city, all highway, a 50-50 mix of both...?
     
  10. Josueblonde

    Josueblonde New Member

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    Both
     
  11. Leeann

    Leeann Full Access Member

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    I'd go somewhere in between 3,000-4,000.
     
  12. lfhoward

    lfhoward Full Access Member

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    ^^^ 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

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    I go 7000kms in my 06, I'm not sure what that is in miles.