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What exactly is Dexos? #5427610 05/12/20 06:43 PM
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mpack88 Offline OP
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What does the dexos spec mean? I hear many complain that an oil doesnt meat decox spec so its a no go. I understand it can be for warranty . Is it something to do with the calcium? What would the calcium levels cause in a GM engine? Just curious.

Re: What exactly is Dexos? [Re: mpack88] #5427614 05/12/20 06:49 PM
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SugarMouth Offline
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Last edited by SugarMouth; 05/12/20 06:53 PM.

'07 Escalade 175k miles (Mobil 5-30 or Kirkland 5-30)
'16 GTI 57k (Amsoil Euro Classic 5-40, Mobil Euro 0-40 or Kirkland 5-30 as of late)
Re: What exactly is Dexos? [Re: mpack88] #5427669 05/12/20 07:56 PM
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edwardh1 Offline
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and what are the different group oiks and what oils are in what group?


These products are all new every year?? They are a revolution!!! Razor blades, mens shirts, TVs, wiper blades, gutter guards, hearing aids... according to the ads. But also all new last year
Re: What exactly is Dexos? [Re: mpack88] #5427691 05/12/20 08:17 PM
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MParr Offline
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It’s basically a club oil companies join. In return for their membership dues, they get a snazzy logo to put on their oil containers.


2019 VW Tiguan SE 2.0 TSI Now: Castrol Pro OE LL IV 0W20 & OE VW
2020 F-150 STX Super Cab 2WD 2.7 Ecoboost. FF & OE filter
Re: What exactly is Dexos? [Re: MParr] #5427699 05/12/20 08:31 PM
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JohnnyJohnson Offline
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Originally Posted by MParr
It’s basically a club oil companies join. In return for their membership dues, they get a snazzy logo to put on their oil containers.


As close as it gets!


2004 Corolla 140120
Out: Havoline Pro DS 10w-30 Purolator PureOne 10-29-19 136457
In: Pennzoil Platinum HM 5W-20 ST 4386
2006 Duramax 77077
Out: T6 5W-40 XG9100 73909
In: Rotella Dino PH9100 11-3-19
Re: What exactly is Dexos? [Re: mpack88] #5427703 05/12/20 08:33 PM
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kstanf150 Offline
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mpack88

Excellent question

Last edited by kstanf150; 05/12/20 08:34 PM.
Re: What exactly is Dexos? [Re: mpack88] #5427710 05/12/20 08:40 PM
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CKN Offline
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Please see the thread sited above-it's much better than the answers you are getting from the shade tree mechanics thus far.......................

Re: What exactly is Dexos? [Re: JohnnyJohnson] #5427714 05/12/20 08:41 PM
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CKN Offline
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Originally Posted by JohnnyJohnson
Originally Posted by MParr
It’s basically a club oil companies join. In return for their membership dues, they get a snazzy logo to put on their oil containers.


As close as it gets!



Both useless comments of the day....................

Re: What exactly is Dexos? [Re: CKN] #5427727 05/12/20 08:58 PM
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kstanf150 Offline
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Originally Posted by CKN
Originally Posted by JohnnyJohnson
Originally Posted by MParr
It’s basically a club oil companies join. In return for their membership dues, they get a snazzy logo to put on their oil containers.


As close as it gets!



Both useless comments of the day....................



Ok
Whistle britches
What’s the answer to OP’s question 🤔

We’re all dying to know the real answer 👍

Re: What exactly is Dexos? [Re: mpack88] #5427731 05/12/20 09:04 PM
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jqgz Offline
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Bunch of hooplah, other than the lowered Noack standard.

See how I spelled Noack? That’s how it’s spelled please take note.

Re: What exactly is Dexos? [Re: mpack88] #5427736 05/12/20 09:08 PM
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LubricatusObsess Offline
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To stay out of court when customers wreck their engines using Fred's Custom Recycled Oil Emporium.

Oh - and to get a fat licensing fee from the oil makers, which they pass along to.........(wait for it).......us!!!


Elastohydrodynamic Lubrication makes the world go 'round!
2017 Ram 2500 - PUP 0W-40, Fram XG
2011 Chev Traverse - PUP 5W-30, Fram XG
2005 Chev Kodiak C5500 - PUP 10W-30, Fram XG
Re: What exactly is Dexos? [Re: mpack88] #5427737 05/12/20 09:10 PM
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blufeb95 Offline
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GM is more stringent on Volatility than API/ILSAC, thus for an oil to pass Dexos it generally has to be of a better quality than oil's that barely meet the API/ILSAC requirements. Although there are plenty of oils of great quality that don't have Dexos plus only 0w20, 5w20, and 5w30 are accepted Dexos1 grades. Dexos certification is really only important if you have a GM vehicle under warranty otherwise it's just a potential sign of quality that the oil exceeds API/ILSAC requirements and then some.

Re: What exactly is Dexos? [Re: MParr] #5427742 05/12/20 09:15 PM
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Quattro Pete Offline
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Originally Posted by MParr
It’s basically a club oil companies join. In return for their membership dues, they get a snazzy logo to put on their oil containers.

If I am being asked to produce a modern engine that is (1) powerful, (2) economical, (3) reliable, (4) eco friendly, (5) doesn't require frequent oil changes, and (6) I'm supposed to cover it with a long warranty, then I should be able to specify what lubricant to use in it, IMO.

Basic API specs haven't kept up with modern engine lubrication demands, so engine manufactures took matters in their own hands, and I don't blame them.


2002 530i   2015 Q5 3.0T   2018 Charger SRT
Re: What exactly is Dexos? [Re: mpack88] #5427976 05/13/20 08:08 AM
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ARCOgraphite Offline
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DEXOS?

WTH is ILSAC for?

Is it now Asian manufacturer centric?

Appears there is No Meeting of the industry minds anymore.

Noack ? What does Carnival Music have to do with oil ?

Insanity Reigns!


2019 VW Jetta S 6MT OCI#2 7378mi-MOTUL Specific VW508.00+VW Service Filter; '17 Subaru Crosstrek CVT OC#9 70254mi-Rotella
Gas Truck 5W20 + Fram Ultra 7317 Filter
Re: What exactly is Dexos? [Re: mpack88] #5428014 05/13/20 08:46 AM
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ka9mnx Offline
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dexos is a lubricant specification. Tougher to meet than industry API specs (mainly comprised of oil industry over sight). ILSAC, a vehicle manufacturer driven spec, tried expanding on API specs. Most vehicle manufacturers have also published their own, specific, specs and most simply follow API/ILSAC. GM, with dexos, is not exclusively a GM spec (works with most modern engines) and has brought a new level to oils specs.


2005 Ranger 3.0 - SuperTech Syn 0w-20/Motorcraft
2000 4Runner 3.4 - SuperTech Syn 5w-30/Toyota
1997 B2500 Van 3.9 - M1 HM 10w-30/Mopar
1993 F150 4.9 - SuperTech Syn 5w-30/Motorcraft
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