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#4506833 - 09/03/17 10:47 PM Dexos 1 Gen 2---Any Differences?
lukejo Offline


Registered: 09/21/11
Posts: 404
Loc: IL
Of the oils that will be certified with this spec, assuming 90% of daily drivers in the US (nothing exotic), assuming normal to conservative OCI's, is there any reason other than price to choose one brand over another?
My example: I really like Valvoline Full Syn w/Ml. However, a recent thread on here concluded that it had a substantially lower quality base oil than Mobil 1 and Pennzoil synthetics. If my VFSML is Dexos 1 Gen 2, then it will keep my engine as clean and protected as it would ever need to be and within ridiculously small differences as compared to M1 PP, etc..
Correct?

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#4506839 - 09/03/17 10:54 PM Re: Dexos 1 Gen 2---Any Differences? [Re: lukejo]
dparm Offline


Registered: 04/19/10
Posts: 13466
Loc: Chicago, IL
The official answer for how gen 2 is better:


The most current dexos1 specification (dexos1 Gen 2) was released in 2015 to provide even higher engine performance and protection, particularly low speed pre-ignition (LSPI) protection in small displacement turbo-charged engines. dexos1 Gen 2 is the best option for your GM spark-ignited gasoline engine regardless of make, model or year.



All else being equal (namely price and availability), I would go for a gen 2 over a gen 1. Only exception might be if you are in a fringe use case.
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#4506844 - 09/03/17 11:06 PM Re: Dexos 1 Gen 2---Any Differences? [Re: lukejo]
dwendt44 Offline


Registered: 05/17/06
Posts: 3968
Loc: Central Wisconsin
Gen 2 is very close to full synthetic.
Even the newest transmission fluid is full syn.
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#4506979 - 09/04/17 07:18 AM Re: Dexos 1 Gen 2---Any Differences? [Re: lukejo]
Eddie Offline


Registered: 12/07/03
Posts: 9563
Loc: Florida, Cape Coral
I checked my Pennzoil 0w20 & 0w30 and it is only Gen 1. What are the major GEN 2 oils? Ed
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#4506981 - 09/04/17 07:19 AM Re: Dexos 1 Gen 2---Any Differences? [Re: lukejo]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1657
Loc: Crawfordville FL
M1 AP has a gen2 license
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#4506982 - 09/04/17 07:20 AM Re: Dexos 1 Gen 2---Any Differences? [Re: lukejo]
pbm Online   content


Registered: 04/19/04
Posts: 7602
Loc: New York
If you "really like" VML FS then I see no reason not to use it....it is an excellent oil.
I'd bet that any brand of FS dexos1 gen 2 oil will keep your engine running great for as long as you care to own that vehicle....in other words...they are all very good.
I'm guessing that the latest dexos spec. cuts back on calcium to help prevent LSPI. If your car is not a turbo, you would be served well by buying up the old dexos oil at a discount IMO....
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#4507070 - 09/04/17 09:51 AM Re: Dexos 1 Gen 2---Any Differences? [Re: lukejo]
bigj_16 Offline


Registered: 07/03/17
Posts: 1267
Loc: Douglas County, Colorado
I was a little confused about this. I did a little reading from the link to http://www.centerforqa.com/dexos-about/
dexos 1 Gen 2 and dexos 2 are not the same. dexos 2 is the euro standard and a different list of approved oils.

Speaking to the calcium, it is kind interesting that the M1 oils that I can find calcium data on have pretty low calcium, whereas it doesn't appear(yet) that the other USA manufacturers have dropped thiers en masse(yet). We will see with the new GF-6 next year.

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