10,000 Miles and Counting on Mobil 1 and Mobil 1 Oil Filter on 2007 Escalade...

[hcvone]

Originally Posted by airhammer

Amazing! I think I'm going to try it. Test at 10k then every 5k thereafter. It still feels wrong though. It was a big step for me to go to 9k. Old habits die hard.

It's is hard because we spent so many years changing the oil every 3k miles.

[airhammer]

Feb 07

For The First Time, Beginning In 2008 Model Year, Mobil 1 Will Be Standard Equipment In Entire Cadillac Lineup

FAIRFAX, Va.--(BUSINESS WIRE2)--ExxonMobil today announced that Mobil 1, the world's leading synthetic motor oil, has been selected by Cadillac as the factory fill motor oil for its 2008 Cadillac Escalade and DTS models, making Mobil 1 standard equipment in every new 2008 Cadillac vehicle that rolls off of the production line.

[CTS-V-TWIN]

Originally Posted by airhammer

Feb 07

For The First Time, Beginning In 2008 Model Year, Mobil 1 Will Be Standard Equipment In Entire Cadillac Lineup

FAIRFAX, Va.--(BUSINESS WIRE2)--ExxonMobil today announced that Mobil 1, the world's leading synthetic motor oil, has been selected by Cadillac as the factory fill motor oil for its 2008 Cadillac Escalade and DTS models, making Mobil 1 standard equipment in every new 2008 Cadillac vehicle that rolls off of the production line.

I read the same bulletin on the Mobil 1 website, but as with all Cadillacs, the oil cap should indicate Mobil 1 as the factory fill and the 2008 Escalades do not have anything stamped on the oil cap like they do on the CTS, DTS, STS and V-Series vehicles. Does anyone know if it states Mobil 1 as the factory fill in the 2008 owner's manual?

SG

[hcvone]

My 08' SRX does have a Mobil 1 cap on it, although it really has Amsoil in it.

[CTS-V-TWIN]

Originally Posted by hcvone

My 08' SRX does have a Mobil 1 cap on it, although it really has Amsoil in it.

hcvone (Carl),

I figured as much. I was just wondering why GM/Cadillac would factory fill the 2008 Escalades with Mobil 1 and not install a Mobil 1 oil cap at the factory or at least a label under the hood telling the owner that Mobil 1 is in the crankcase. All other GM vehicles that are factory filled with Mobil 1 at the factory have a clearly marked Mobil 1 emblem on the oil cap like my 2006 CTS-V and my 2007 STS-V. Weird!

SG

[hcvone]

If I get a chance tomorrow before the flood starts I will stop by my local Caddy dealer where our SRX came from and pop the hood on an 08' Escalade and check it out, you can always tell synthetic oil by the smell.

[CTS-V-TWIN]

Originally Posted by hcvone

If I get a chance tomorrow before the flood starts I will stop by my local Caddy dealer where our SRX came from and pop the hood on an 08' Escalade and check it out, you can always tell synthetic oil by the smell.

Very true. I can identify the smell of Mobil 1 from a mile away. It has a very distinct odor. Before you pop the cap, let me know if GM/Cadillac changed the oil caps to say Mobil 1 on it. Maybe they did a late changeover on the oil caps. The 2008 owner's manual would be the best indicator though.

SG

[hcvone]

If they have maybe I can get you one.

[CTS-V-TWIN]

Originally Posted by hcvone

If they have maybe I can get you one.

I may have to send you the one off my 2007 Escalade to replace the missing one off the 2008!

SG

[hcvone]

Didn't get there today, too many inches of rain.

[MRANT212]

I use Mobil 1 on my Escalade and my Impala SS. I do change though every 7500 miles which may be a bit early. I remember when Mobil 1 first came out and they said it would last 25k. Maybe they can but I am not about to try!!!

Anthony

[C66 Racing]

AERO1,
I'd be a little concerned running Mobil 1 as long as you are, or intend to, without doing a used oil analysis such as the one provided by Blackstone Labs mentioned above, the same lab I use for my oil samples. Mobil 1 doesn't have as robust additive package as it once had. When Mobil 1 Extended Performance came out a few years ago, Mobil touted that it had about 42% more anti-wear and detergent additives than the base Mobil 1. They have since revised their language to state the Extended Performance version has "50 percent more SuperSyn", but don't state exactly what SuperSyn is. No matter, the Extended Performance version is clearly the better oil and Mobil rates it for 15k miles. They don't list a mileage for the base Mobil 1, I suspect so as not to confuse all the GM factory fill customers who GM tells to follow the Oil Life Monitor (OLM) with the base oil.

A concern for the base Mobil 1 is its TBN. Total Base Number (TBN) is the measurement of a lubricant’s reserve alkalinity, which aids in the control of acids formed during the combustion process. A good oil starts with a TBN of around 12 and loses TBN over its life. A TBN of 1.0 is recognized as the minimum to prevent acidic buildup.

Consider the TBN of 5.9 on this sample of AMSOIL XL 5w30 (AMSOIL's least expensive oil) in my wife's Chevy Trailblazer with the 5.3L V-8 after 5817 miles:
2003 Chevy Trailblazer Used Oil Analysis AMSOIL XL 5w30

For comparison, the TBN in this sample on my 06 CTS-V with Mobil 1 was only 3.6 after 2856 miles:
2006 Cadillac CTS-V Used Oil Analysis Mobil 1 Engine Oil

I'm pretty confident that if I had taken the Mobil 1 in my CTS-V to 10k miles, the TBN would have been below 1.0 and the oil's resistance to acid control would have been gone.

As an FYI, my OLM read 25% remaining at the 2856 mile mark and interestingly provided a pretty good indication of when to change the oil. If I had taken the OLM down to 0%, I suspect the oil's TBN would have been about done. I'm a believer in the OLM (unless you are using a really good oil).

My recommendation is that you get your oil analyzed (with TBN) before going much farther on it.

[Dif]

C66 Racing, I think you sum it all up very well.
If a lot of miles are put on every year, it's nice to save oil changes and leave the oil in as long as possible, but it should be within reason.
I can't see leaving the oil in for Extremely long mileage. Why take the chance for a simple oil change.
I run Mobil 1 and do not usually put more than 6,000 miles on in a year.
I like the Mobil 1 for all the reasons it is what it is, but I still change it between 3000-5000 miles depending on the mileage/weather or just the length time it has been since the last oil change.
If it's not convenient to change my oil at 3000, at least I know with Mobil 1 it's good for at least 2000 more miles before a change.
But beyond that I'd rather change it then to take a chance.
Just my situation and thoughts on the subject.

On another note: the oil monitor in the vehicles have been proven to be extremely accurate to the oils condition and when it should be changed.

[BigZub]

All very interesting. I run a stock '07 ESV with Mobil 1, and usually change the oil when the OLM gets to 35% remaining. I figure that oil is cheap, oil changes are cheap, and it's cheap insurance to have clean oil in the vehicle. Sevice techs are usually very surprised to note the cleanliness of the oil during the change, which figures, since I do a lot of highway driving. I normally get ~7500 miles between oil changes, and don't want to go much more than that between tire rotations anyway.

Another good reason to change more frequently is if you do a lot of short trips, not allowing the engine and oil to come to full operating temperature for significant periods of time and boil off any water or condensation in the oil.

You can bet that I'll be sending some oil off for analysis though!

[CTS-V-TWIN]

Where can I order the oil analysis kit?

Also, does it matter that I am running the Mobil 1 Truck & SUV formula? Mobil 1 claims that the Truck & SUV formula is tougher and protects better than the standard Mobil 1.

SG