Recent Topics
Quaker State Green bottle question
by vtecboy
37 minutes 2 seconds ago
Chev Blazer 1998 Oil
by NTech
Today at 03:50 PM
'00 Firebird oil change update.
by EricF
Today at 02:35 PM
Where to buy LE1605 in quarts?
by dedonderosa
Today at 02:05 PM
Flushing out previous "Stopleak" ?
by GoStumpy
Today at 01:29 PM
Free Oil changes at my Nissan dealer but no ester?
by racin4ds
Today at 12:44 PM
Redline D6 for '07 BMW 328xi
by typ901
Today at 12:38 PM
Shift Solenoid Pack on Dodge 41TE/A604
by Thermo1223
Today at 11:56 AM
1996 Civic Power Steering Fluid & Filter
by 01_celica_gt
Today at 11:50 AM
concoction to free up rusty transmission gears.
by Panzerman
Today at 11:30 AM
Brake Job 2000 RWD Chevy Astro
by actionstan
Today at 11:06 AM
A new car, from Boeing!
by expat
Today at 11:04 AM
Newest Members
and111, guzie, myrtlebeachrick, NTech, ImZIC
49675 Registered Users
Who's Online
87 registered (440Magnum, 01rangerxl, 2oldtommy, 06AllAmerican, actionstan, 01_celica_gt, 5 invisible), 1875 Guests and 179 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
49675 Members
64 Forums
212325 Topics
3328413 Posts

Max Online: 2651 @ 04/21/14 04:38 PM
Donate to BITOG

Page 1 of 2 1 2 >
Topic Options
#2304537 - 07/02/11 08:50 PM Mobil 1 vs ACDelco dexos synthetic blend
BIC Offline


Registered: 07/02/11
Posts: 1
Loc: Kansas
I have a 2010 Cadillac CTS 3.6L. OEM oil is Mobil 1 5W-30, says so in the manual and on the cap. Brought it to Cadillac dealer assuming they would put Mobil 1 in. Reading invoice after the fact, it said, "dexos syn blend oil." Presumably it was GM's own ACDelco. Dealer said that was now the recommended oil.

I called another Cadillac dealer and asked what they would put in and he said Mobil 1 and that the dexos syn blend was a money saving alternative ($60 vs $80).

While I understand that dexos is fine, I want what's best, not just OK. Intuitively, it seems to me that fully synthetic Mobil 1 is better than GM's syn blend. On the other hand, if they're equal, wouldn't mind saving a few dollars either. Interestingly, if that same 3.6L engine is in a Chevy or a Buick, it did not call for Mobil 1 in 2010. Any thoughts out there?

Second question. I drive low miles, maybe 5,000 per year. When I hit the one year mark, the OLM still said I had about 70% life left but I changed it anyway at about 2,000 miles (first oil change). Any other recommendations other than changing it yearly regardless of OLM life left? Same for Mobile 1 or dexos syn blend?

In my low mileage cars (2k-3k per year) with conventional oil, I change every six months. Is that OK? Thank you.

Top
#2304541 - 07/02/11 08:59 PM Re: Mobil 1 vs ACDelco dexos synthetic blend [Re: BIC]
tig1 Offline


Registered: 01/03/09
Posts: 9497
Loc: Illinois
Chances are the OLM is designed for M1 full synthetic not a blend or dino. If the dealer said the blend was now the reccomended oil, I would have him check with Cadillac and see if they got the memo.
_________________________
2007 Ford Fusion 134,000 miles
M1 0-20
2007 Ford Focus 122,000 miles
M1 0-20
10,000 mile OCIs on both engines
M1 ATF
M1 10-30 in all OPE

Top
#2304554 - 07/02/11 09:19 PM Re: Mobil 1 vs ACDelco dexos synthetic blend [Re: BIC]
dishdude Offline


Registered: 11/14/08
Posts: 3117
Loc: Phoenix
Dexos supersedes all previous GM oil specs, so you are good to go!
_________________________
'13 ATS
'12 E350

Top
#2304566 - 07/02/11 09:37 PM Re: Mobil 1 vs ACDelco dexos synthetic blend [Re: BIC]
daves87rs Offline


Registered: 02/23/09
Posts: 12949
Loc: Michigan
Sounds stange....but I think that dexos blend would be fine...
_________________________
“Life is like photography. You need the negatives to develop.”

Top
#2304620 - 07/02/11 11:18 PM Re: Mobil 1 vs ACDelco dexos synthetic blend [Re: BIC]
wallyuwl Offline


Registered: 06/02/09
Posts: 1433
Loc: Lexington, KY
For your mileage, changing with the blend at one year intervals will be fine.

Try calling different GM dealers for their oil change prices. $60 for a blend and $80 for M1 seems high. Here M1 is $60 at the local Chevy dealer.

You could also change it yourself for about $30 per oil change with a synthetic.

Top
#2304631 - 07/02/11 11:53 PM Re: Mobil 1 vs ACDelco dexos synthetic blend [Re: BIC]
Brenden Offline


Registered: 03/03/10
Posts: 2331
Loc: Mn
At my local GM dealership its about 50 for a M1 oil change... I would not be super pleased about the unknown blend being in my new car.. the best way to make sure the right thing gets in there is to do it yourself..
_________________________
1992 BMW 325i M50b25 153k
M1 0w40/Mann

1991 Acura Integra - B18b swap
PP 5w30/Fram Ultra

1995 Honda Civic - Built B17A1
Amsoil SAE30 (break in)

Top
#2304646 - 07/03/11 12:27 AM Re: Mobil 1 vs ACDelco dexos synthetic blend [Re: BIC]
229 Offline


Registered: 06/23/11
Posts: 712
Loc: Mid Atlantic
Your oil change intervals are fine. The Mobil1 is a superior oil because it also has HTO-06 approval. The ACDelco is good to use also, he may be using bulk for it and bottled now for Mobil1 as he has adjusted his inventory.
_________________________
Eneos

Top
#2304686 - 07/03/11 02:53 AM Re: Mobil 1 vs ACDelco dexos synthetic blend [Re: BIC]
The Critic Offline


Registered: 08/30/04
Posts: 17358
Loc: Walnut Creek, CA
Both products are on the GM approval list for Dexos 1. So in GM's eyes, they are exactly the same.

Top
#2304701 - 07/03/11 05:46 AM Re: Mobil 1 vs ACDelco dexos synthetic blend [Re: dishdude]
LexusAussie Offline


Registered: 01/04/08
Posts: 215
Loc: Sydney, NSW, Australia
Originally Posted By: dishdude
Dexos supersedes all previous GM oil specs, so you are good to go!


Agree.

It's a GM Approved Oil, used by a GM Dealer. What's the problem? There are multiple brands of oils that meet the Dexos spec. Mobil 1 is only one of them.
_________________________
Dave "Dave's not here man"
2010 Lexus RX350 Sports Luxury, 2006 Lexus SC430
AMSoil Series 3000 HDEO 5W-30
BMW's are German Chevy's

Top
#2304709 - 07/03/11 06:50 AM Re: Mobil 1 vs ACDelco dexos synthetic blend [Re: BIC]
gulian Offline


Registered: 12/06/09
Posts: 62
Loc: canada
I wouldn't wait more than a year to change oil regardless to how many miles on it, as it contaminates due to time. As far as the acdelco versus m1, I would think full synthetic would be better in the long run and it's cheap insurance. That's the direction I chose and my vehicle requires a dexos1 oil. Little is said here at bitog about AcDelco oil's durability.


Edited by gulian (07/03/11 06:51 AM)
Edit Reason: point added

Top
#2305104 - 07/03/11 03:14 PM Re: Mobil 1 vs ACDelco dexos synthetic blend [Re: BIC]
Durango Offline


Registered: 02/15/07
Posts: 2007
Loc: Los Angeles, California
BIC,

At my brothers Caddy dealership they use Castrol "Syntec" instead of GM/Mobil 1 instead. So tht bing said not all GM dealers go by what the factory says. I'm pretty sure Mobil 1 and Syntec are about equivelant in quality.

I had thought that GM's version is the same as Mobil 1 "Dexos" as I understood it.

Durango

Top
#2335220 - 08/02/11 12:57 PM Re: Mobil 1 vs ACDelco dexos synthetic blend [Re: BIC]
MonumentOiler Offline


Registered: 02/04/07
Posts: 442
Loc: Monument, CO, USA
I'd go to one year intervals with your low yearly mileage cars too. Conventional oil will be fine over the year.

Oil does not contaminate over time the way brake fluid does and if you are changing the oil at 70% of life left definitely go with the cheaper change as long as it meets specs.

Yearly changes are best done in the spring after all your winter cold starts.

Top
#2335227 - 08/02/11 01:04 PM Re: Mobil 1 vs ACDelco dexos synthetic blend [Re: BIC]
Xstang Offline


Registered: 04/13/11
Posts: 244
Loc: Kansas
I wonder how much exxonmobil paid to get that printed on you oil fill cap.
_________________________
2003 Subaru WRX
Rotella T6 5w-40-PL14460
2003 Camry
Whatever is cheap smile

Top
#2335409 - 08/02/11 04:16 PM Re: Mobil 1 vs ACDelco dexos synthetic blend [Re: BIC]
Finklejag Offline


Registered: 11/23/03
Posts: 1420
Loc: Vancouver, WA
I did a Virgin oil analysis on the ACDelco Synblend 5W-30. It's made by Mobil and has a very good additive package. The ACDelco oil will be fine for one year oil changes in your car.


ACDelco VOA
_________________________
2010 Volkswagen GTI 2.0T

Top
#2335416 - 08/02/11 04:19 PM Re: Mobil 1 vs ACDelco dexos synthetic blend [Re: BIC]
someguy Offline


Registered: 09/10/10
Posts: 251
Loc: Austin, TX
Here is a VOA on that dexos 5W-30 with some discussion on its origin http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2314385

A $60 oil change seems expensive for a oil change from bulk blend but its a Caddy so I guess that makes everything cost extra. I would never go over a year on any oil regardless of mileage or frequency driven.

Top
Page 1 of 2 1 2 >