Dexos oil

[Ralphdss]

Can anyone if dexos is a full synthetic or synthetic blend oil.

[nyrfan]

Here is the approved GM list:

http://www.gmdexos.com/licensedbrand...sedbrands.html

[Dupree878]

Very disappointing to see some semi-synthetic blends on there.

[nyrfan]

Originally Posted by Dupree878

Very disappointing to see some semi-synthetic blends on there.

Why? Not everyone wants or need to use full synthetic.

[Dupree878]

Because I have 2 years free oil changes with my car and only want full synthetic but the dealer can use whatever's on that list.

[nyrfan]

Originally Posted by Dupree878

Because I have 2 years free oil changes with my car and only want full synthetic but the dealer can use whatever's on that list.

Got ya. Prior to the 2013's the SS used to come with Mobil 1 so your changes would have been Mobil 1. Maybe you can talk to your dealer about that.

If they don't go for it you'll get the ACDelco synthetic blend.


Sent from my 2SS/RS

[SSMickey]

Originally Posted by nyrfan

Got ya. Prior to the 2013's the SS used to come with Mobil 1 so your changes would have been Mobil 1. Maybe you can talk to your dealer about that.

If they don't go for it you'll get the ACDelco synthetic blend.


Sent from my 2SS/RS

A dealer can use an approved oil. It does not have to be the AC Delco nor the Mobil 1. The dealer closest to my house uses Penzoil Platinum as there bulk oil. You can request other brands and they will use it, for an upcharge. Your going to get the bulk during a freebe oil change unless you ask for something differant and are willing to pay the differance.

[nyrfan]

Originally Posted by SSMickey

A dealer can use an approved oil. It does not have to be the AC Delco nor the Mobil 1. The dealer closest to my house uses Penzoil Platinum as there bulk oil. You can request other brands and they will use it, for an upcharge. Your going to get the bulk during a freebe oil change unless you ask for something differant and are willing to pay the differance.

My point was if you don't ask you'll get AC Delco blend.

[ebaugh1990]

So I see royal purple isn't on the list? Oh well.

[nyrfan]

Originally Posted by ebaugh1990

So I see royal purple isn't on the list? Oh well.

Just know that if you use RP and if you need warranty work on the engine they can deny your claim if they find your using a non certified oil.


Sent from my 2SS/RS

[ebaugh1990]

Originally Posted by nyrfan

Just know that if you use RP and if you need warranty work on the engine they can deny your claim if they find your using a non certified oil.


Sent from my 2SS/RS

Gotcha, well, they may deny my claim anyway since I have my car tuned. Or what do you think?

I've always been a hardcore Royal Purple fan, so it'll be hard for me to switch. I just don't care for the MOBIL brand.

[ebaugh1990]

Also, I saw Pennzoil Platinum full synthetic is on the list. May use that instead

[clg_98ta]

Yeah, the list has grown a lot as more brands complete the certification process...

[NavyDood]

Some food for thought on Dexos approved semi-synthetic...... Dexos is a trademarked GM formulation exclusive to GM and not the API. GM released the Dexos formula to the oil manufacturers so there was never a monopoly issue. It's the oil companies choice whether they want to make their oils Dexos approved. Dexos is nothing more than a re-engineered additive package. The primary purpose of the change is for ash control. If you get the GM branded Dexos from the dealer, you are getting a semi-synthetic blend oil that is made by XOM. A semi-synthetic most commonly only has 15-30% synthetic oil in it and the rest is plain ol dino oil.