Amsoil 0W30 or 5W30 for new Pontiac G8 GT?

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Well I have consistenly run Amsoil 10W30 in my LS1, very nice and quiet, uses no oil. I have a 100 shot dry nitrous, a 228 230
.571 .591 at 112 cam, and various other goodies.
I would think your LSX would love it.
 
Originally Posted By: FrankN4
OK....now we have me confused again. Why would an oil, any brand, with a high base number not be good for the Pontiac or any car. I thought a high base number was a very desirable attribute.

Also, if it meets GM 4718M, doesn't that mean low and or acceptable Sulfated Ash levels? Question only as I honestly do not know.


It is. SSO has acceptable SA levels, and will not harm this or any engine it's recommended for.
 
Originally Posted By: Doug Hillary
Hi,
Pablo - You said this;

"Please tell us what the sulphated ash level of SSO is."

You're asking me?


Well, you did make these statements:

"Lubricants with a very high TBN (such as Amsoil SSO) may not a desirable lubricant for this engine"

"Yes one factor alone is the SA level"

Indeed, I am asking you. So what is it? You are warning people away from SSO, because of the TBN, and specifically the SA level.
 
Hi,
Pablo - Be careful what you read! I indicated that lubricants with a very high TBN may have a high SA level!

M1 10w-30 has a SA level of 1% - in modern engines it is typically the lower the better

Please tell us what level your product has!!!!
 
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Originally Posted By: 9c1lt1
Originally Posted By: sprintman
What do you think of the car?



Very Nice
thumbsup2.gif



Pontiac G8's have been sold in Australia as Holden Commodore's for many years with the G8 being the latest incarnation. Great cars and glad that you concur although they did "ugly them up" a bit in making them look like a Pontiac (IMHO).

http://www.holdencampaign.com.au/60/commodore.html#/home/
 
Originally Posted By: Doug Hillary
Hi,
Pablo - Be careful what you read! I indicated that lubricants with a very high TBN may have a high SA level!

M1 10w-30 has a SA level of 1% - in modern engines it is typically the lower the better

Please tell us what level your product has!!!!



What is the SA level in SSO? SA level is not given on the Amsoil website for SSO, ASL or ATM.
 
Originally Posted By: Doug Hillary
Hi,
Pablo - Be careful what you read! I indicated that lubricants with a very high TBN may have a high SA level!

M1 10w-30 has a SA level of 1% - in modern engines it is typically the lower the better

Please tell us what level your product has!!!!


Doug please don't leave words out. You said "such as Amsoil SSO". I know you don't like to be challenged and we all respect your knowledge, but you have painted an incorrect image. I know you were being general about high TBN HDEO's, but you specifically said "such as Amsoil SSO".

Since you made such a bold statement without any facts about SSO. I will tell you this, SSO TBN is boosted with ashless additives.

Quote:
The new Signature Series 0W-30 has an increased TBN of 13.2 and is supplemented with an ashless antiwear system for improved heat and viscosity control.


http://www.amsoil.com/dealer/onevoice/OneVoice_SSO.pdf

Amsoil SA level in SSO is in the .8-1.2% range. But let's just say it's 1.4% - this probably is not even a harmful level in a modern engine.

Now will you tell us with certainty, and show us the proof, that this engine will have less wear, less deposits, better performance with M1 10W-30.
 
A TBN of 13.2 is high. From what little I know about oil formulation, this is not easy to achieve with a highly ashless antioxidant/wear system. I think this is why the oil is as expensive and advanced as it is.

Most of all the low SA oils have lower TBN's around 8.5.
 
Quote:
Hi,
ta Factory fill here is M1 I believe -


Where is it stated that the Pontiac G8's, Holden VE's come from the factory with Mobil 1 oil?? Btw, these cars also hold 8.8 qts of oil! Thats why this question was stated to get the best answer possible. The car will be using extended drain intervals(due the amount of oil required) and my friend posted this question to the board before I became registered. I appreciate all of the insight so far. We were originally thinking M1 5w40 but figured we would put the question to the experts. Looks like we are leaning towards the Amsoil.
 
You have several good options. Mobil 1 5w-30 scored a 5.3 (EP 5w-30 scored a 3.9) on the TEOST test which tests for deposit control, and is good for up to 15,000 miles in the Corvette in some instances. Castrol Syntec scored a 26.6 in comparison.

With 8.8 qts of oil, Mobil 1 0w-30, 0w-40, 5w-30 and Amsoil SSO would all work well. The Amsoil does have higher Tbn than Mobil 1 starting out. Mobil 1 0w-40 is a very capable long drain oil as well.
 
Originally Posted By: 1992B4C
Quote:
Hi,
ta Factory fill here is M1 I believe -


Where is it stated that the Pontiac G8's, Holden VE's come from the factory with Mobil 1 oil?? Btw, these cars also hold 8.8 qts of oil! Thats why this question was stated to get the best answer possible. The car will be using extended drain intervals(due the amount of oil required) and my friend posted this question to the board before I became registered. I appreciate all of the insight so far. We were originally thinking M1 5w40 but figured we would put the question to the experts. Looks like we are leaning towards the Amsoil.


It may not be stated, but the Corvette does come with the "we recommend Mobil 1" or whatever oil cap because this was the oil that GM tested the LSx series engines with. EM has a very strong relationship with many of the big auto manufacturers and that's why you see the brand-specific specs plastered on the backs of the bottles.

FWIW, a guy on our local Mustang board works for GM in lubricant testing. I recall a blurb by him about M1 being the only oil that would pass one of the tests they threw at it. I have no idea what grade, but I do recall the test being done to validate the oil for use with a turbo.

Mobil spends absolutely ridiculous amounts of money certifying their oils and getting various approvals. This has been discussed on here before as to why Mobil has so many bloody approvals and many "other" synthetic oils simply list as having "recommended for", which means that the oil does NOT meet the spec, but is simply recommended by the manufacturer of the oil for applications where that spec is noted.

The reason for this was apparently due to the exuberant costs associated with obtaining these specs/approvals/certifications.

I guess I would think there is a reason GM recommends Mobil 1 for the LSx motors.......
 
Quote:
TEOST test which tests for deposit control


Found this interesting;


Quote:
Known as ASTM D6335, the original TEOST® protocol simulates the cyclic temperatures of 200° to 500+°C experienced in the turbocharger with a 12-cycle test run over a period of two hours requiring 100+ mL of test oil. The test obtains the weight of deposit forming on a resistively-heated hollow rod (TEOST® Depositor Rod) held within a casing as bulk oil flows by at a rate of 0.45 g/minute. The increase in rod weight caused by deposits is used as a measure of oil performance.


I did not know that the G8 has a turbo?

Check out this... TEOST info

Love this quote...

Quote:
The most important aspect of the TEOST is the separation of the oxidation process into the two aspects believed to be present in the engine,


Believed?
shocked2.gif


And the test does not even run in a motor. It is run on a rod that they heat up, pass oil through it at a rate and then weigh the rod.

This is why I don't put too much faith in all of these ratings and tests.

I go with what works in a car over the actual miles operated.

Any one want to order the SAE test paper and report back?
cheers3.gif


Take care, bill
 
Originally Posted By: Bill in Utah
Quote:
TEOST test which tests for deposit control


Found this interesting;


Quote:
Known as ASTM D6335, the original TEOST® protocol simulates the cyclic temperatures of 200° to 500+°C experienced in the turbocharger with a 12-cycle test run over a period of two hours requiring 100+ mL of test oil. The test obtains the weight of deposit forming on a resistively-heated hollow rod (TEOST® Depositor Rod) held within a casing as bulk oil flows by at a rate of 0.45 g/minute. The increase in rod weight caused by deposits is used as a measure of oil performance.


I did not know that the G8 has a turbo?

Check out this... TEOST info

Love this quote...

Quote:
The most important aspect of the TEOST is the separation of the oxidation process into the two aspects believed to be present in the engine,


Believed?
shocked2.gif


And the test does not even run in a motor. It is run on a rod that they heat up, pass oil through it at a rate and then weigh the rod.

This is why I don't put too much faith in all of these ratings and tests.

I go with what works in a car over the actual miles operated.

Any one want to order the SAE test paper and report back?
cheers3.gif


Take care, bill


Bill:

I never once stated that the G8 had a turbo. I just remember a guy who did lubrication testing for GM stating that the only oil that passed one of the tests, which was for a turbo engine, was Mobil 1. Is this necessarily applicable to the LSx motors? No. But it obviously shows the robustness of a particular grade of Mobil 1 in comparison to whatever it was being run against.

As I said, I am sure there is a reason GM recommends Mobil 1. What that reason is, I honestly have no idea other than EM has gone the extra mile (and spent the extra mega-bucks) to have their oils contain a ridiculously long list of certs and approvals.

As your post states, you feel that many of these specs and approvals don't hold much water. That is fine, I am sure that there are many that do. To each their own.
 
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So does it state in the manual or on the oil cap that Mobil 1 is recommended for this model?

I know Mobil 1 has "helped"
smirk2.gif
GM and GM puts on some of their engines a cap or sticker but I've not ever seen a manual that shows the Mobil 1 recommended.

The 2 local Chevy Stealerships that I talked to (bought 2 trucks to them) did not carry Mobil 1 and in Vettes, they used 5w-30 Vavoline Synpower. Both of them (which I found interesting)
21.gif


Take care, bill
 
Exxon Mobil - GM relationship is strictly financial. It's not about the BEST oil for each engine. This is NOT a slight on either product, it's a business relationship - sure neither would tolerate oil related failure, but it's also about the lowest amount on the GM purchase order and the advertising buck.
 
Quote:
So does it state in the manual or on the oil cap that Mobil 1 is recommended for this model?


No mention of Mobil 1 anywhere on my car or in the manual. They did not come from the factory with Mobil 1. Nor did any other LSx car EXCEPT Vette and CTS-V. Manual states oil meeting GM standard GM6094M. So, does M1 and Amsoil SSO meet this?
 
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