Howoften should I change my synthetic oil?

Discussion in 'SN95 4.6L Mustang Tech' started by NYStang2002, Dec 4, 2003.


  1. NYStang2002

    NYStang2002 Member

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    I just finished putting in Mobil1 0W20 when I changed my oil. How often should I change it? Somone at work told me that synthetic oil can be changed every year but i think thats a load of BS that guy must be smoking some serios $h!t!!!!
  2. asthmaticZeater

    asthmaticZeater New Member

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    the synthetic oils do last longer than convential types. problem is the filters arent. filters have lived their life at 5k tops. depending on driving habits.

    keep the same schedule :nice:


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  3. 46gtsblown

    46gtsblown Founding Member

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    I have a 96 GT that I bought from new. I installed synthetics at 1000 miles and have changed it 1 time per year from then on. I do a filter change at 6 months and top off the oil. I use 1 quart of oil per year + the 1/2 qt to replace what I loose with the filter change.
    From what I can see in my valve cover the inside of the engine is very clean with no nasty build up. I have been supercharged for the past 2.5 years.
    The motor is just as quiet and fuel efficient as the day I got it.

    Dwayne
  4. Premium Speed

    Premium Speed New Member

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    you are going to hear everything from 3k to 10k..........i change mine at 5k(ford says 5 also) in all my vehicles. i run mobil 1 synthetic and mobil 1 oil filter. :nice:
  5. sapperstang78

    sapperstang78 Founding Member

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    I run Mobil 1 and I change mine every 5K.
  6. BlkNShiny03

    BlkNShiny03 Member

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    I put in Amsoil full Syn 5W-30 at 3,000 miles in my GT. Amsoil has a recommended 25,000 mile or 1 year oil change interval, with a warranty. This can be viewed at their web site. http://www.amsoil.com/warranty.htm
    I plan on changing my filter at 6 months, and changing my oil in one year.
  7. PGreenSVT

    PGreenSVT New Member

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    I agree with these guys. I run Redline synthetic new filter and top off at 5k and full change at 10k. 80K miles and my engine is as clean as can be inside. If using a petroleum based oil you could half that easily and be ok. New filter and top off at 2500 and full change at 5k. The same oils sold in Europe suggest a 7500 mile interval (petoleum based that is).
  8. stallion98gt

    stallion98gt New Member

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    what type of oil filter r u guys using with ur synthetics ?...I plan on switching to mobil1 5w30..I'm looking now for the filter reference..thanks...
  9. chevylover

    chevylover New Member

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    Mobil 1 and a new Fram every 5K.
  10. GOLDENPONY

    GOLDENPONY Founding Member

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    Syn Oil

    I use Mobil 1 5W30 and I change it every 5K miles. Works for me.
  11. kennym01

    kennym01 New Member

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    Every 5k miles...
  12. Kraw

    Kraw Nail On The Head El Moderatoro Founding Member

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    5k is a good number, 3 if your picky. I go every 3 since we put so few miles on the car now and we use the Ford oil that's part synthetic.

    I have read about others doing like 46gtsblown said and have had no problems
  13. COramprat

    COramprat Drone Driver Mod Dude

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    I do mine every 5k....makes it easy to remember. 45,000..change oil. 50,000...change oil. And so on...
  14. SilverGTV8

    SilverGTV8 New Member

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    Every 5K. 5-20 Royal Purple with a K-N Oil filter. Comes out almost as clean as it goes in!
  15. xtrememustang1

    xtrememustang1 New Member

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    anywhere from 4-5 would be best!
  16. 65Coupes4ever

    65Coupes4ever Founding Member

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    Oil change intervals depend upon driving habits/conditions. To be safe, 3000 miles will be fine for most any situations. 5000 is ok for normal driving habits/conditions. A factor is the filter you use. Be sure to use a quality filter and change the oil at regular intervals. Today's engines will last well over 100K IF we do the cheapest preventative maint there is.........an oil/filter change. The air filter and fuel filters are important too.
  17. RysRed96GT

    RysRed96GT I like it FURRY!!! Founding Member

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    the car has always had synthetic and is changed about every 3-4k miles. maybe that's why it lasted so long :p. and i've heard bad things about Fram filters, so i use only motorcraft filters now.:nice:
  18. Ruffrider

    Ruffrider Founding Member

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    I do it every 3000 miles just because Im used to it. I can't drive my car over 3000miles on an oil changes... makes me feel bad for the car.
  19. forpit2000gt

    forpit2000gt Founding Member

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    I only use Ford or Carquest. :nice:
    I run Amsoil 7500 and change at 7500.
  20. kirkyg

    kirkyg Founding Member

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    mobil 1 5w20 every 7500 with wix filter (best on the market and half the price of mobil one).

    kirkyg

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