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  1. #1
    Member
    Join Date
    Nov 2004
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    HEALDSBURG Ca.
    Posts
    4,454

    2011 Chevrolet Silverado 1500 5.3 oil change?

    Getting ready to change the oil with 5w-30.I see the 2011 uses an oil "dexos"
    certified .Does anybody know if that is a 100% syn? Blend syn.? Could it be eather?
    I got some Casrtoil dexos certified that is a 100% synthetic ....... But now I am wondering about using the 100%.... Thanks for looking.
    BILLY. 1995 202DCX ELITE TEAM FATBOY
    & 2000 tracker PT185
    2014Fish count
    Days on the Water =6.0
    Big fish 1-6.0
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  3. Member
    Join Date
    Jun 2006
    Location
    Murfreesboro, TN
    Posts
    208
    #2
    I know this is an old post but I'll post the answer anyway.

    Dexos is a GM brand of their own Semi-synthetic oil that is required for the 7500 mile oil change intervals that GM has gone to. You dont have to use Dexos only because most other semi and fully synthetic oil is "dexos approved" for use in the vehicles.

    I know at our dealer we have noticed less oil consumption on 2-10 year old vehicles after switching over to dexos oil in them on all our oil changes here.

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