gve

Anyone know if the extended performance has any better additives over the regular Mobil 1 that would justify using it. I would not run it any longer then the regular Mobil 1.

hucktyson

Use real oil , Schaffer synthetic.

BEZ06

I don't know what you mean by: "I would not run it any longer then the regular Mobil 1." The info sheet below shows 23 "regular" Mobil 1 oils.

Take a look at this Mobil Oil product info data sheet:

https://mobiloil.com/~/media/amer/us...guide-2016.pdf


The Vette Owner's Manual tells us that for street driving we should use 5W30 that meets Dexos specs. They say that for the track we should swap in 15W50 for the track event (and that data sheet indicates that the 15W50 does not meet the Dexos spec), then back to the 5W30 for the street.

In that info sheet above you can see that our factory fill Mobil 1 5W30 is the first oil listed on page 2.

You can also see that the first 4 oils listed on page 1 are listed as "Extended Performance". The first 3 meet Dexos specs, but the 4th one does not. However, the 3rd on is a 5W30 and meets Dexos specs.

Also, note the Phosphorous and Zinc levels in the Ext Perf 5W30 and the 5W30 on the 2nd page - they are both 800 & 900 ppm each.

So...if you want to run that Ext Perf 5W30 that meet Dexos specs and has the same P & Zn levels as the factory fill 5W30, I don't know what the problem would be.

There must be some other additives in the Ext Perf version, but if it meets the Dexos spec there shouldn't be too much question about it being satisfactory for any GM vehicle.

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AORoads

To add to the above, ck out the posts of "LDB" a former petrol. engr. working for oil corps. in Houston who posts on C6 Gen. He very recently had some positive and otherwise ideas on Ext. Perf. oils in general.

L Duncan

Extended performance has some "PAO'S" in the oil. Regular Mobil 1 is really a hydrocracked petroleum oil(it's not synthetic)

BEZ06

What does "Advanced Full Synthetic" mean???

In this product info sheet, ALL the Mobil 1 oils listed are "Advanced Full Synthetic" formulations.

I know that marketing of oil probably allows some dino oil in a "full synthetic" formulation, but are you saying that synthetic Mobil oils are any different than synthetics from other distributors?


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L Duncan

Only in the United States because of a court ruling awhile back group 3 oils can be marketed as "synthetic" oils. In Asia and Europe the very same oils are marked petroleum oils.(this is a big scam here in the United States). All the major oil companies take advantage of this ruling to profit from selling petroleum oils marked as synthetic for high prices...if you want to run TRUE synthetics research and use only group 4 or 5 oils. I run Red Line as it is 100% ester based group 5 synthetic oil.

BEZ06

Thanks for that info.

However, I'm real happy running Mobil 1, so I guess I don't understand why I would need a "true" synthetic.


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spearfish25

This has segued nicely to an alternative oil discussion. So who is running Redline or Amsoil instead of Mobil 1? How did Mobile 1 become the recommended oil? Just a trade partnership with GM and Mobile 1 teaming up?

L Duncan

You will be fine running Mobil 1 regular or extended performance...Im just an **** SOB that only likes to run the very best lubricants.

jdhommert

from what I remember from reading Bob is the Oil Guy forums...

M1 is a better quality oil than M1EP
M1EP just is designed to not break down quite as quick, but M1 is technically a better oil

IIRC when M1EP first came out, BITOG forums hated on it because M1 was a group IV based oil and M1EP was a group III basestock....something like that, I really can't remember. Hopefully someone will chime in with the details.

extremeZ

yes yes. read and talk to folks re the same material. that is why everything i own runs alisyn pro drive 21. cars, trucks, boats, atvs, etc.

real. synthetic. oil.

L Duncan

you actually have it backwards.

MitchAlsup

The reason one uses Ester based oils is that their HTHS is better (higher) for the same 100dC viscosity than either PAO based oils of dino crap\\\\oils.

Sk8Man_

I made the decision at the start, same as you are thinking, to use the "Extended Performance" 5W30 Mobil 1 as it is "Dexos" rated and states that it is recommended for use in engines that run at higher temperatures.

The bottles are identified by a "Gold" color cap and is only $0.25 or so more than the regular Mobil 1. While it is rated for 15,000 miles between changes, I will never do more than 5K miles on an oil change and usually no more than 3K to 3500.

davepl

Not my data, but if its accurate, might be useful for comparison. No guess as to why the "regular" Mobil 1 has a higher load capacity, but that's what the 540RAT document says. There is a tad more zinc in the Extended Performance, but not enough to worry about your cats, for example.

5W30 Mobil 1 Extended Performance 15,000 mile, API SN synthetic = 83,263 psi “load carrying capacity”
zinc = 890 ppm
phos = 819 ppm
moly = 104 ppm

5W30 Mobil 1, API SN (synthetic) 101,099 psi “load carrying capacity”
zinc = 801 ppm
total detergent = 1489 ppm

Busa Dave

Been using Amsoil and Redline for over 25 years on all of my vehicles. Oil to me is something to protect and be changed often--cost is of no concern. When I get another truck (do not do this with the German vehicles except the engine) after 1k change all lubricating fluids from axle to axle with Amsoil.


The Z06 is a little different in that when I changed fluids at 10k used GM except for engine oil and that is 10-30 Dominator (Amsoil) in my built LT4 engine. It is what the builder uses for the high hp Z06, Caddy and Camaro builds and it what I was using as well prior to having the work done.


In this car change every 4k on the engine and 10k on everything else. Could care less what GM says I like to keep fresh lubricants in the vehicle.


NOACK is another good thing to make yourself familiar with esp on the SC motors. Important number..

Busa Dave

Not really---Mobil 1 paid for the privilege.. GM makes money whenever they can. Personally do not agree that Mobil 1 is a great oil as it once was. Used it back in 1979 through 1988 I believe. Much prefer using a synthetic and a specialty synthetic in my engines - use Amsoil/Redline in transmissions, transfer cases and differentials.

jimman

Just hit 1.85 million miles with 11 corvettes over 40 years without any engine lube issues, all with Mobil One. Now why in hell would I take the word of some builder or someone I don't know without the resources to properly test. Of course I'm sure GM wants to use lubes that break their equipment. My C6 Z06 had 196,000 miles on it when I sold it, no oil consumption, Leak down was within spec and compression was between 195 to 205 psi.

Busa Dave

You need to do a whole lot more research. The information is out there. There are better oils. Some are not available at every parts store or even city for that matter. Some people are driven to use the best in class parts and for me this includes oils. For me cost is not part of the decision making process.