Why doesn't Mobil 1 Extended Performance 5w30 meet GM 4718M?

[btanchors]

All,

I am curious why Mobil 1 (the Extended Performance Line) does not meet GM 4718M, whereas the "regular" Mobil 1 does meet it. Was this a marketing decision by Mobil, or is there some test in GM4718M that the EP line cannot pass? If it's the latter, what is it about GM4718M that the EP line cannot pass?

 

[TR3-2001SE]

I would think it is just that no individual approvials have been sought on the whole EP line.
Most approvials are for warranty purposes. These oils are for 15,000 mile runs. I see none of the EP oils meeting any manufacture approvials at all. However this is now Mobils best oil in my opinion.

 

[TomJones76]

One point:
Mobil does NOT want you using Mobil 1 Extended Performance until you're out of factory warranty.
That being said, I feel like they should cerify it for 4718M; we all know it could pass the tests, and it would make some Corvette guys happier.

Edit: Hmmm. Perhaps Corvette guys won't do 15K intervals anyway, so Mobil doesn't care? A good percentage of the Corvettes I've seen in my everyday life are garage queens, and you see a LOT for sale where the owner obviously drove less than 5K per year.

 

[427Z06]

FYI for newer members:

GM 4718(M) specification is for high temperature stability (Corvette). A low oxidation rate (ASTM
D 4871) and HTHS requirements are the toughest part of the spec to meet. This spec was created back in '92 when GM began specing M1 for the Corvette.

GM 6094M is a low-temperature pumpability requirement. See http://www.imakenews.com/lng/e_article000098055.cfm for more info.

 

[ruking77]

I am a 2001 Corvette owner who has used Mobil 1 5w30 since new and app 15,000 mile OCI's, except for a totally unnecessary old school 1,600 mile OCI.

I am at 73,000 miles and for me that is a garage queen. In light of most Corvette owners, I realize this is considered "HIGH MILEAGE," crazy lengthed OCI's etc.

So the Mobil 1 is oem filled specified and it is a no brainer to follow the OLM. So given the fact the Mobil 1 5w30 is already specified to go 15,000 miles, already meets the extra GM 4178 M, and that a very very very small population of Corvette owners actually do run 15,000 mile OCI's with "normal" Mobil 1, why would both GM and consumers pay extra, both for the EP and GM pay Mobil 1 money to meet a standard most of the target population will not even come near to using anyway?

Given people's sentiments about 15,000 mile OCI's, my Z06 engine should have worse case stopped running or should have a healthy case of problems. Neither extreme is the case. I fully expect this engine to go 150,000 to 200,000 unless lack of use will cause more deterioration than harder use.(15,000 miles per year)

 

[bottgers]

TR3-200SE

I don't know about that. I think M1's 0-40 would at least give their EP stuff a run for its money. Everything I've read about the 0-40 suggests that it's the "bee's knees" of motor oil.

 

[Stooge]

Could it be that Mobil "EP" has a better additive pack (like more Zinc/Phos) and can't be approved (ala Amsoil)??

 

[427Z06]

quote:

---

Originally posted by ruking77:
Given people's sentiments about 15,000 mile OCI's, my Z06 engine should have worse case stopped running or should have a healthy case of problems.

---

You're not alone ruking77. I know of a few people who even track their LS-x engines with nothing more than Mobil 1 5w30. One is approaching 100K miles on a stock, never opened, engine.

 

[btanchors]

Stooge,

I doubt the additive pack is the reason - especially now that most of the EP line is SM/GF-4. But that raises another question - if you're marketing an oil that is intended to be used after the warranty expires, why even bother with GF-4 certification? I know, a silly question - but it sounds like Exxon-Mobil went to a lot of trouble to get the EP line GF-4 certified....Anyone care to comment?

 

[dave1251]

427Z06 has the best andswer to this question.

 

[stingray427]

quote:

---

Originally posted by ruking77:
I am a 2001 Corvette owner who has used Mobil 1 5w30 since new and app 15,000 mile OCI's, except for a totally unnecessary old school 1,600 mile OCI.

I am at 73,000 miles and for me that is a garage queen. In light of most Corvette owners, I realize this is considered "HIGH MILEAGE," crazy lengthed OCI's etc.

So the Mobil 1 is oem filled specified and it is a no brainer to follow the OLM. So given the fact the Mobil 1 5w30 is already specified to go 15,000 miles, already meets the extra GM 4178 M, and that a very very very small population of Corvette owners actually do run 15,000 mile OCI's with "normal" Mobil 1, why would both GM and consumers pay extra, both for the EP and GM pay Mobil 1 money to meet a standard most of the target population will not even come near to using anyway?

Given people's sentiments about 15,000 mile OCI's, my Z06 engine should have worse case stopped running or should have a healthy case of problems. Neither extreme is the case. I fully expect this engine to go 150,000 to 200,000 unless lack of use will cause more deterioration than harder use.(15,000 miles per year)

---

I was told by a Corvette tech that if you stick with the GM fluids and intervals the Corvette was designed to last 300,000 miles per engineers.
This is for a 2005 Corvette:happy:

 

[Patman]

But what if I want my Corvette to last 500,000 miles?

 

[Jason8691]

I dont think there is a Vette owner on the planet who would drive one 500,000 miles.

 

[jsharp]

quote:

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Originally posted by Patman:
But what if I want my Corvette to last 500,000 miles?

---

Then you'll become good friends with the guys in the parts department.

 

[stingray427]

quote:

---

Originally posted by 427Z06:

quote:

---

Originally posted by ruking77:
Given people's sentiments about 15,000 mile OCI's, my Z06 engine should have worse case stopped running or should have a healthy case of problems.

---

You're not alone ruking77. I know of a few people who even track their LS-x engines with nothing more than Mobil 1 5w30. One is approaching 100K miles on a stock, never opened, engine.

---

So if they switch to Amsoi or Redline the car will last even longer?

 

[Patman]

quote:

---

Originally posted by Jason8691:
I dont think there is a Vette owner on the planet who would drive one 500,000 miles.

---

I know, but it's still nice to know it might be able to make it that far.

Actually, I just did a google search to see if I could find who has the highest mileage Corvette out there, and it came up with a link to this month's Corvette Fever magazine which has an article in it on a 78 Corvette with close to 400,000 miles on it.

I do know there was a guy on Corvetteforum with a 99 Corvette who had over 320,000 miles on it the last time he posted (which was more than a year ago, maybe even two) He was a salesman in Michigan who drove his car all day long for his job. My 98 is nowhere near that, I bought it two years ago with 32k on it, and now it's got just under 68k on it. I drive about 18k a year. When I bought it I figured I'd keep it at least 10 years, but I don't think I'll keep it that long before trading it for a C6 Corvette. I'm waiting for the prices on the used ones to come down a lot more though. (and when I do buy one, it'll be a 2006 or newer since I want one with the 6 speed automatic)

 

[stingray427]

quote:

---

Originally posted by Patman:

quote:

---

Originally posted by Jason8691:
I dont think there is a Vette owner on the planet who would drive one 500,000 miles.

---

I know, but it's still nice to know it might be able to make it that far.

Actually, I just did a google search to see if I could find who has the highest mileage Corvette out there, and it came up with a link to this month's Corvette Fever magazine which has an article in it on a 78 Corvette with close to 400,000 miles on it.

I do know there was a guy on Corvetteforum with a 99 Corvette who had over 320,000 miles on it the last time he posted (which was more than a year ago, maybe even two) He was a salesman in Michigan who drove his car all day long for his job. My 98 is nowhere near that, I bought it two years ago with 32k on it, and now it's got just under 68k on it. I drive about 18k a year. When I bought it I figured I'd keep it at least 10 years, but I don't think I'll keep it that long before trading it for a C6 Corvette. I'm waiting for the prices on the used ones to come down a lot more though. (and when I do buy one, it'll be a 2006 or newer since I want one with the 6 speed automatic)

---

But if you get a used one you don't want someone else's problems. Get a new one then you know it will last because you know you will take good care of it. My 1988 5.0 has 208,000+ miles on it I hope this 2005 C-6 can last as long and be just as durable.

 

[Patman]

I bought my 98 used and it's only had a couple of problems in the two years I've owned it. It cost me $33,000 CDN, compared to $55,000 if I had bought a new 2004 model right as they were bringing in the first of the 2005s. That's a huge chunk of change to save! And I ended up getting a car that was (and still is) in near showroom condition.

If I had unlimited funds, sure I'd much rather have a brand new one and be the one to break it in! But a new 2006 Corvette with no options is about $62,000 right now. In five years time I'll pick one up for $35 to $40,000. (and will probably still get close to $20,000 for mine)

 

[ruking77]

quote:

---

Originally posted by stingray427:

quote:

---

Originally posted by 427Z06:

quote:

---

Originally posted by ruking77:
Given people's sentiments about 15,000 mile OCI's, my Z06 engine should have worse case stopped running or should have a healthy case of problems.

---

You're not alone ruking77. I know of a few people who even track their LS-x engines with nothing more than Mobil 1 5w30. One is approaching 100K miles on a stock, never opened, engine.

---

So if they switch to Amsoi or Redline the car will last even longer?

---

In theory yes, Amsoil and/or Redline are considered better oils. However a statistical side by side test has not been done. I also think that if I sell it at 200,000-250,000 miles not many buyers are going to be too concerned if I did or not. I read in a few places that surveys indicate most folks stay with the Mobil 1.

 

[stingray427]

quote:

---

Originally posted by ruking77:

quote:

---

Originally posted by stingray427:

quote:

---

Originally posted by 427Z06:

quote:

---

Originally posted by ruking77:
Given people's sentiments about 15,000 mile OCI's, my Z06 engine should have worse case stopped running or should have a healthy case of problems.

---

You're not alone ruking77. I know of a few people who even track their LS-x engines with nothing more than Mobil 1 5w30. One is approaching 100K miles on a stock, never opened, engine.

---

So if they switch to Amsoi or Redline the car will last even longer?

---

In theory yes, Amsoil and/or Redline are considered better oils. However a statistical side by side test has not been done. I also think that if I sell it at 200,000-250,000 miles not many buyers are going to be too concerned if I did or not. I read in a few places that surveys indicate most folks stay with the Mobil 1.

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