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How long do you leave synthetic in?

Discussion in 'Car Forum' started by pnarq5, Oct 6, 2005.

  1. pnarq5

    pnarq5

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    I used to use Mobil 1 and change every 3-5K. Now I use Amsoil and change every 5-7K. Just wondering what you guys do. I also use a Mobil 1 or Amsoil filter.
     
  2. 45acp4me

    45acp4me Pissed puppet

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    Amsoil or Mobil 1 and 10k.
     

  3. dbrowne1

    dbrowne1 Senior Member

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    Mobil 1, OEM filter, every 5K-6K miles. Multiple oil analyses say that I could go even longer.
     
  4. streeter69

    streeter69 This is Kewl

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    I run amsoil in my GT for 15k and the same with my G/F's car with filter changes @7500.
     
  5. RoninP80

    RoninP80

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    agree, for most drivers, at least 6k miles
     
  6. gsbell

    gsbell Consumed

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    Mobil-1 7500
     
  7. Glock-Man-Man

    Glock-Man-Man

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  8. Geeorge

    Geeorge Sarcasm Inc.

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    In my truck I change the Mobil-1 5W40 every 5000 miles

    In my old Dart I change the Mobil-1 15w50 every couple of years or at 1000 miles which ever comes first.Last time it was at 2 years and 800miles:)
     
  9. Ron3

    Ron3

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    For severe duty 3000mi or 3 months, 6 months or 6000mi for non-severe duty. I use the same program synthetic or conventional. For moderate duty somewhere in between. ;a

    I would never let a passenger (non-commercial) vehicle go past 1 year or 7000 miles before changing the oil and filter.

    Ron3
     
  10. StockGlock23

    StockGlock23 Hilarious!

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    I run between 15K and 20K using Amsoil in my truck. I change the filters about every 5K to 6K. I have 185,000 miles on my 96 Ram and it runs like a top.
     
  11. MIgunner

    MIgunner

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    every 15k miles or once a year, which ever comes first. This is in a bmw.
     
  12. Clem Eastwood

    Clem Eastwood

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    i use redline. i go about 7K between changes and change the filter about every 3500.
     
  13. Short Cut

    Short Cut PatrioticMember CLM

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  14. SlammedDime

    SlammedDime G23 Member

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    I do what the container of Amsoil says... I think its 36K miles or one year... normally I hit one year first, which ends up being between 10 and 12K, so thats when I change the oil. I change the filter every 6K tho.

    And any unused Amsoil gets turned into Gun Oil. :)
     
  15. 45acp4me

    45acp4me Pissed puppet

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    36k a year might be fine and dandy for a large diesel that has an oiling system that holds gallons and gallons of oil, but in a 4 to 5 quart system I wouldn't push past 12k or 15k miles.
     
  16. streeter69

    streeter69 This is Kewl

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    Depends on what amsoil is used.
     
  17. frefoo

    frefoo

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    In NoVa just driving to work counts as "severe duty".

    In NoVA if a road speed limit is 45 and your avg spped is 20 then your car is considered severe duty.

    If you travel on routes 66,28,495,50,29,15,95,7100,7700 etc then you are in the severe duty group.

    That being said Mobil 1 every 3 thousand miles.
     
  18. G27dogmannfl

    G27dogmannfl

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    amsoil 0w 30 try to do it every 10k
     
  19. 45acp4me

    45acp4me Pissed puppet

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    I'd like to see the oil tested after 20k and see what you still think of it.
     
  20. Victory

    Victory

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    10 on mobile 1. Once let it got 15 w/ no ill effects. I'd go 15 all the time on amsoil.

    I change the filter when i change the oil but go with the Mobile 1 filter which seems to last. wouldn't do that with a cheap filter.