dexos 1 motor oil - How many Companies Make this Oil Type

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Thread: dexos 1 motor oil - How many Companies Make this Oil Type

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    dexos 1 motor oil - How many Companies Make this Oil Type

    Could anyone recommend a dexos 1 5w20 oil ? A manufacturers name would be great. Should I now use synthetic oil or a synthetic blend ?

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    Re: dexos 1 motor oil - How many Companies Make this Oil Type

    dexos1 is only in 5w30.
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    Re: dexos 1 motor oil - How many Companies Make this Oil Type

    I have been using 100% synthetic oil for 30/40 years on over 100 vehicles-example(mobil 1-5w30) and have not lost an engine yet!!!

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    Re: dexos 1 motor oil - How many Companies Make this Oil Type

    The 2014 Impala should use 10W-40 oil. Like The Good Olde Days.

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    Re: dexos 1 motor oil - How many Companies Make this Oil Type

    Quote Originally Posted by sullivanbob2000 View Post
    Could anyone recommend a dexos 1 5w20 oil ? A manufacturers name would be great. Should I now use synthetic oil or a synthetic blend ?
    Quote Originally Posted by BigAls87Z28 View Post
    dexos1 is only in 5w30.
    Don't the Gen V engines require 5w20?
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    Re: dexos 1 motor oil - How many Companies Make this Oil Type

    Quote Originally Posted by sullivanbob2000 View Post
    Could anyone recommend a dexos 1 5w20 oil ? A manufacturers name would be great. Should I now use synthetic oil or a synthetic blend ?
    I'm not aware of any GM engine that uses 5W20. We use bulk 5W30 Dexos we get from a local oil supplier. You can buy the GM stuff or look for a synthetic blend 5W30 that has Dexos approved on the label. I just bought a 5 quart jug of Pennzoil at wal-mart for $16. You can use M1 if you like throwing your money away.

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    Re: dexos 1 motor oil - How many Companies Make this Oil Type

    Quote Originally Posted by Phinxter View Post
    I'm not aware of any GM engine that uses 5W20. We use bulk 5W30 Dexos we get from a local oil supplier. You can buy the GM stuff or look for a synthetic blend 5W30 that has Dexos approved on the label. I just bought a 5 quart jug of Pennzoil at wal-mart for $16. You can use M1 if you like throwing your money away.
    I had a similar question. I opted to go for the correct grade called for on the engine, versus a royalty paid to GM and an incorrect grade. Either one would probably be fine. They wouldn't ever be able to determine if the engine failed because it was 5w-20 synthetic or 5w-30 Dexos approved. Here's the link to that thread:

    Non-Dexos or Correct grade?
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    Re: dexos 1 motor oil - How many Companies Make this Oil Type

    I wouldn't bet my engine on them not being able to tell the viscosity of the oil. Take it from a warranty administrator who's personally seen them do it.

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    Re: dexos 1 motor oil - How many Companies Make this Oil Type

    If the grade is correct per their recommendation, they can't argue it. Its in the manual and the cap. They can't tell that the 5w-20 non dexos caused the failure, versus a 5w-30 (incorrect grade) that had the money certification on it. If you're using generic oil, maybe. Any correct grade synthetic will be acceptable in any new GM vehicle.

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    Re: dexos 1 motor oil - How many Companies Make this Oil Type

    Quote Originally Posted by MrCritical View Post
    I wouldn't bet my engine on them not being able to tell the viscosity of the oil. Take it from a warranty administrator who's personally seen them do it.
    Right. Use the recommended grade. They just can't deny an engine because the oil isn't Dexos approved. If it calls for synthetic 5w-20, use it, regardless of whether its Dexos approved.

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    Re: dexos 1 motor oil - How many Companies Make this Oil Type

    As long as it meets all the specs for the oil, you're covered.

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    Re: dexos 1 motor oil - How many Companies Make this Oil Type

    Quote Originally Posted by MrCritical View Post
    As long as it meets all the specs for the oil, you're covered.
    ^^what he said^^
    I use an oil that meets the standards but doesn't pay the royalty.
    That said I have heard of dealers taking an oil sample from a failed engine to have it tested, fuel too(Diesel).
    So I'd run the correct viscosity at least while it is under warranty. IIRC years back GM was getting away from 10w-40 because the 40 weight showed more carbon buildup in the ring lands than the 10w-30. This was long before the push for low viscosity oils like 5w-30, 5w-20 and 0w-20 etc.

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    Re: dexos 1 motor oil - How many Companies Make this Oil Type

    The time is coming, you better have records of your oil changes with oil and filter type in order to have repairs done under warranty,,,,better yet services done by the dealer will be included in the purchase during the warranty period.

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    Re: dexos 1 motor oil - How many Companies Make this Oil Type

    Quote Originally Posted by BigAls87Z28 View Post
    dexos1 is only in 5w30.

    AC Delco announced earlier this year that Dexos-spec 5W20 oil would be available in March 2013. I do not know the status of this announcement.

    Here is a link to the various brands that are Dexos-spec: http://www.gmdexos.com/licensedbrand...sedbrands.html
    Last edited by 1999 White C5 Coupe; 03-30-2013 at 04:11 PM.

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    Re: dexos 1 motor oil - How many Companies Make this Oil Type

    Quote Originally Posted by 1999 White C5 Coupe View Post
    Here is a link to the various brands that are Dexos-spec: http://www.gmdexos.com/licensedbrand...sedbrands.html
    That is a link for LICENSED brands, there are many other that meet Dexos specs but do not pay the licensing fees.

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