Synthete Dextros or Moble One?
Thread Starter
Pro
Joined: Jul 2015
Posts: 579
Likes: 56
From: Sarasota Florida
Synthete Dextros or Moble One?
Had my z51 oil changed at dealer
price was 40$ less then i expected!
on asking they said they put in GM's brand of full synthete instead if moble one !!
said there was a service notice that it was good to go on a z51....
should i have them remove it and put mobile 1 in OR is it ok to use gm's brand ...
they said differences were zip except that dextris came in 55 gal barrels an mobile 1 camera in bottles...
price was 40$ less then i expected!
on asking they said they put in GM's brand of full synthete instead if moble one !!
said there was a service notice that it was good to go on a z51....
should i have them remove it and put mobile 1 in OR is it ok to use gm's brand ...
they said differences were zip except that dextris came in 55 gal barrels an mobile 1 camera in bottles...
Race Director
Joined: Jan 2014
Posts: 10,709
Likes: 7,102
From: Fulshear, TX
Technically Mobil 1 is the correct, and better, choice, but Dexos is now a full-synthetic rather than a syn-blend so you're good to go either way. Both are fine as far as the warranty is concerned. I wouldn't sweat it and just be sure to request Mobil 1 next time if you'd prefer it.
Thread Starter
Pro
Joined: Jul 2015
Posts: 579
Likes: 56
From: Sarasota Florida
Technically Mobil 1 is the correct, and better, choice, but Dexos is now a full-synthetic rather than a syn-blend so you're good to go either way. Both are fine as far as the warranty is concerned. I wouldn't sweat it and just be sure to request Mobil 1 next time if you'd prefer it.
Thread Starter
Pro
Joined: Jul 2015
Posts: 579
Likes: 56
From: Sarasota Florida
i have 30500 Smiles on my 2016 z51 and tell now only used moble one ..
they told me that at factory they now use dextrous not mobile 1
So i dont feel "bad" about it ...
just a bit uneasy at first
LOL...
A retubale mechanic told me it is likely made by the same plant , that synthetics are just about identical but for the name on the can.
Race Director
Joined: May 2001
Posts: 15,324
Likes: 2,080
From: Guelph, Ontario
Safety Car
Joined: Mar 2004
Posts: 4,048
Likes: 1,478
From: South Florida
GM Dexos Synthetic motor oil is manufactured for GM by....................none other than ExxonMobil. It's not a coincidence. Enjoy the $$$ savings and drive the car.
https://www.machinerylubrication.com...Motors-network
https://www.machinerylubrication.com...Motors-network
Race Director
Joined: May 2001
Posts: 15,324
Likes: 2,080
From: Guelph, Ontario
GM Dexos Synthetic motor oil is manufactured for GM by....................none other than ExxonMobil. It's not a coincidence. Enjoy the $$$ savings and drive the car.
https://www.machinerylubrication.com...Motors-network
https://www.machinerylubrication.com...Motors-network
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From: South Florida
Team Owner
Joined: Oct 2004
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From: altered state
St. Jude Donor '05
Wont hurt anything, just annoying. So many garages/dealers pull that stunt.
Call them on it, dont ever go back even if its free.
Call them on it, dont ever go back even if its free.
Last edited by cv67; Aug 24, 2018 at 03:40 AM.
Tech Contributor
Joined: Oct 1999
Posts: 41,058
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From: Charlotte, NC (formerly Endicott, NY)
Had my z51 oil changed at dealer
price was 40$ less then i expected!
on asking they said they put in GM's brand of full synthete instead if moble one !!
said there was a service notice that it was good to go on a z51....
should i have them remove it and put mobile 1 in OR is it ok to use gm's brand ...
they said differences were zip except that dextris came in 55 gal barrels an mobile 1 camera in bottles...
price was 40$ less then i expected!
on asking they said they put in GM's brand of full synthete instead if moble one !!
said there was a service notice that it was good to go on a z51....
should i have them remove it and put mobile 1 in OR is it ok to use gm's brand ...
they said differences were zip except that dextris came in 55 gal barrels an mobile 1 camera in bottles...
Bill
Burning Brakes
Joined: Apr 2018
Posts: 1,051
Likes: 690
Dexos is just a spec/standard. There are literally HUNDREDS of oil that meet and exceed GM’s dexos and dexos 2 standard, and plenty of dexos certified.
There are no “dexos” brand oil. There’s no such thing as “dexos is now full synthetic.” Dexos simply means it’s an oil formulation that is approved by GM to use in a range of their engines, including the Corvette. It could be a Valvoline oil, Castrol, Shell, Quaker State, or Mobil 1.
There are no “dexos” brand oil. There’s no such thing as “dexos is now full synthetic.” Dexos simply means it’s an oil formulation that is approved by GM to use in a range of their engines, including the Corvette. It could be a Valvoline oil, Castrol, Shell, Quaker State, or Mobil 1.
Le Mans Master
Joined: Oct 2000
Posts: 6,507
Likes: 722
From: Sausalito CA
FWIW...if the dealer used the correct weight and a full synthetic oil...no issues.
But, I don't like the dealer not using the what the service manual calls for TSB or not.
Next visit I would "call them on it and specify they use Mobile 1", but you'll pay $40 more
plus once it is back in the shop you will not know what oil they fill with.
Opinion... DIY oil changes can be fun and satisfying. DIY if you can.
But, I don't like the dealer not using the what the service manual calls for TSB or not.
Next visit I would "call them on it and specify they use Mobile 1", but you'll pay $40 more
plus once it is back in the shop you will not know what oil they fill with.
Opinion... DIY oil changes can be fun and satisfying. DIY if you can.
Team Owner
Joined: Sep 2000
Posts: 25,019
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From: Far NW 'burbs of Chicago
St. Jude Donor '13
Dexos is just a spec/standard. There are literally HUNDREDS of oil that meet and exceed GM’s dexos and dexos 2 standard, and plenty of dexos certified.
That's true, but for a while GM was selling an oil that had "Dexos" in big letters on the bottle, and the "GM" wording was in small print; most people thought it was a brand name and that error persists.
There are no “dexos” brand oil. There’s no such thing as “dexos is now full synthetic.” Dexos simply means it’s an oil formulation that is approved by GM to use in a range of their engines, including the Corvette. It could be a Valvoline oil, Castrol, Shell, Quaker State, or Mobil 1.
That's true, but for a while GM was selling an oil that had "Dexos" in big letters on the bottle, and the "GM" wording was in small print; most people thought it was a brand name and that error persists.
There are no “dexos” brand oil. There’s no such thing as “dexos is now full synthetic.” Dexos simply means it’s an oil formulation that is approved by GM to use in a range of their engines, including the Corvette. It could be a Valvoline oil, Castrol, Shell, Quaker State, or Mobil 1.
