People getting their feelings hurt over the dexos specification.

Discussion in 'The Coffee Shop ~ Chit Chat' started by stchman, Sep 16, 2013.

  1. stchman

    stchman New Member

    The more I read on oil, the more I think it's a religious thing.

    There are so many people whining about dexos, when there are other manufacturers that have specific oil specifications.

    I've been a Mobil 1 user for years and Mobil 1 is dexos approved, so it's a non-factor. Too many people that seem to have a religious belief that if they can't use their precious Amsoil, Royal Purple, Schaeffers, etc., that not driving again is a better solution.

    My thing is, if Amsoil, Royal Purple, etc., are SO SPECTACULAR, just get dexos approval and be done with it.

    Other oil makers have done it:

    Mobil 1
    Castrol
    Pennzoil
    Kendall
    Quaker State

    There are even a bunch of oils that I've never heard of on the licensed list.

    http://www.gmdexos.com/licensedbrands/dexos1licensedbrands.html

    For what Amsoil and Royal Purple charge for a quart of oil, they should be on the list. I am in no way religiously tied to Mobil 1 oil. If Mobil 1 was not on the dexos list, I would choose an oil that was.

    Why is it that other manufacturers can require lubricants that meet a certain specification and it's OK, GM does it and they are bad?
  2. McClintoc

    McClintoc Super Moderator

    What is dexos?
  3. RayVoy

    RayVoy Active Member

    Click on stchman's link and open the "About" tab.
  4. TimTom64b

    TimTom64b New Member

    The dexos specification is something they put together as a way to provide a minimum standard for globally available quality of oil for use in GM engines. It specifies minimum lubri action capabilities of oils under specific conditions. Many of the premium oil companies offer oils with additional additives which enhances lubrication capabilities of oil... but exceeds the minimum specified... and therefore is not certified. In the end it all comes down to using what you feel confident in.
  5. Caddiac

    Caddiac New Member

    Well said. I would add "And what you are willing to risk if the engine is still under warranty. I have never had a warranty issue where the engine lubrication was suspect so I do not know the drill. But if there were a mechanical problem and you were using oil that was not on the list, my guess is you are at the mercy of GM.

    Just curious, has anyone had a warranty issue where the type of oil and frequency of changes was an issue?
  6. Rebel_Bowtie

    Rebel_Bowtie New Member

    Wow I'm glad you posted a link. Had no idea what dexos was lol. Guess it's because I've never had a GM warranty so the only person telling me what oil to put it MY truck was ME.
  7. zippstripp

    zippstripp New Member

    I did a L.O.F the other day for a customer. Used RP 5W-30,it said dexos approved on the label.
  8. RayVoy

    RayVoy Active Member

    From the RP site:

    For vehicles under warranty, Royal Purple recommends its API-licensed oils available at retailers nationwide.

    ROYAL PURPLE API-LICENSED MOTOR OIL


    Royal Purple’s API-licensed Motor Oil combines premium base oils with proprietary additive technologies to create high performance motor oils that optimize engine performance. Royal Purple’s API-licensed motor oil delivers superior protection and improves performance in gasoline and diesel engines. Royal Purple’s API-licensed SN motor oil meets ILSAC GF-5 and Dexos1™* performance requirements.
  9. TimTom64b

    TimTom64b New Member

    Royal Purple offers two grades for street applications... dexos approved and their HPS version with added wear protection. I run the HPS in my truck.
  10. steved

    steved Former Member



    No, its an educated thing. I've done a lot of experimenting with oil, and I'll let a oil analyses tell me what works and what doesn't. There is no "belief" in it.

    I guess based on your Mobil 1/dexos1 religion, running anything that isn't dexo1 approved means its a sub-standard oil and the owner is a fanatic...cause that's exactly what you're saying. So much for anyone want to try something that isn't main stream...so much for having a choice.

    The day you run an engine oil out to 40k miles, and have the UOAs to prove it; then you might understand it.

    Where's my ignore button...

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