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Discussion Starter · #1 ·
My Z06 currently has 14,400 miles on it and I just received another low oil indicator. It's been 3,000 miles since the last oil change and the DIC says that I have 74% of the oil life left. Approximately 400 miles after the last oil change, I received a low oil indicator and added a quart.. 2600 miles later, another low oil.

Over the life of the vehicle (born in february, bought in March) I've added 6-8 quarts in similiar conditions. I've spoken with my local service manager on this, and they handed me a bulletin from GM saying that 1QT of oil in 1,000 miles is acceptable per their specs.

I'm not quite sure where I fall in, but it's somewhere between this and the consumption seems to vary like the phases of the moon.

I went to the dealership today to report the low oil, and they more or less blew me off and told me my only recourse was to call GM (800-222-1020) which I did... I spoke with the representative who suggested an oil consumption test and called the local dealership to let them know.

So now, I have to take the car up there and let them perform this test.. which apparently involves them changing the oil, putting some type of seal on it, and waiting 3,000 miles to test the oil level again.

Is this the understanding of the test that the rest of you have? Have any of you gone through this procedure? If so, what were the results of your test?

I appreciate anyones input... i'm fed up with having to add oil to this car for normal driving situations. I've had a 91 C4, 96 Z28, 96 S10, 97 Z71, 99 Formula, and a 93 GM Van with 160,000 miles on it... NONE of these vehicles have ever burned a drop of oil... yet all the local dealership will tell me is that "every car is different."

Thanks for any input.

-jbl
 

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JBL,

Im gonna hope C4C5 jumps in here. you indeed have to do the Oil Con Test. You should have been able to start it eairler than now, we have tons of posts on this, try the "search" we have for previous posts.

We all feel for ya.......

:cheers:
 

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Hi there,
As for every engine design being different, this is true. I would say that an oil consumption test is definately the first course of action. I will repost the bulletin number as it escapes me at this time. I quart in 2000 is what I remember from memory.
If you are not satisfied with your dealer, I would recommend that you seek the advice from another in your area.
best to you, and let us know how you do, c4c5
 

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I feel for anyone who has an oil consumption problem......and I get angered w/ GM's response and their total lack of "doing the right thing". This crap about 1 quart per 1k miles being "normal" is absolute B.S.--It's not the cost of the Mobil One, it's utter frustration. Hell, if I bought a Kia it would not burn that much oil...not even a Yugo I bet. I bought my Z in July, a June build and had some reservations after seeing some of the posts on the Vette boards but my thirst for a V8 w/ some kick ass power made me do it. I came from a long line of ricers and was close to going w/ a NSX but just had to have the Vette.
Oil consumption was NEVER a thought in my mind w/ the ricers. Gave them hell during driving "schools" and my only thought was to let the turbos/brakes cool down...never a thought/concern over any oil comsumption...and they never used a drop.
For a 50k sled GM ought to 'fess up and fix the damn problem...as a matter of fact, if you bought a Geo you would not expect an oil problem, not w/ any new car...PERIOD! GM could seriously take some lessons from the rice manufacturers.
This in no way is intended to flame the forum or members....I love my Z06 and thankfully it appears I have escaped the oil problem, dumped the original oil at 1400 and now have 3200 and it is still at the full
mark.
It's just that the Vette has a loyal following and it seems GM is doing their best to "blow it off". What a shame!
 

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Bulletin and other facts

Hi there,
The bulletin is 01-06-01-011, and it says one quart in 2000 miles.
As for the oil consumption, being this design, and other small block, do consume oil. The design must be considered, as much as the driving style.
If I am driving 405 horses, just because I am in the field, I know that more agressive driving, yields more oil usage. It is nature of the beast, this is why racers use a dry sump system, with a large tank of oil.
While some LS6 do consume oil, and it is known as to why, GM is not really blowing customers off, I received notice extremely quick when I sent mail to Corvette engineers. And I can attest to the fact that the engineers, all the way up to Dave Peacy, support Corvette, AND correct repair of these loved cars.
It is NOT always within the power that they have to handle each individual case. This is where it is the responsibility of dealers to SERVE the customers.
And that is the reason why I am here, because I want to serve, and dispell rumors, and give facts.
I will do what ever it takes, to serve my customers, and they know this. I am sorry that other dealers do NOT.
Please do not slam Corvette, or the men and women behind it, because for the most part, we serve to the best of our ability.
Best to you all, c4c5
 

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JasonBrent said:
Over the life of the vehicle (born in february, bought in March) I've added 6-8 quarts in similiar conditions. I've spoken with my local service manager on this, and they handed me a bulletin from GM saying that 1QT of oil in 1,000 miles is acceptable per their specs.

.

-jbl
1) Keep track of all the oil you added, they will remburse you if there is a problem ( they did for me ).

2) You are having the same burn rate I had and it was the PCV valve, not the rings. Maybe I am wrong but it is suppose to be easy to check the PCV valve and see if there is an oil build up. Mine was fixed in one day.

3) If it is the PCV get them to change the plugs.

I don't know but maybe you can push them to look at this prior to putting you through an oil consumption test.

Good luck.
 

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Isn't there a new piston (polymer coated) and ring pack retrofit kit out to fix this problem. I suspect the "abnormal" consumption test is the only way you can have it installed under warranty by a dealer. I heard of some owners in So. CA I believe who had the new rings installed recently, but don't know if it was covered under warranty. C4C5specialist, what's the "official" policy on warranty repairs of this nature?
 

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Well, D,
Each vehicle is handled by a case by case basis. As for the pistons, I am NOT sure.
However, for the oil consumption, we MUST have full documentation of an oil usage issue, which will take 3000 miles.
Then, I am required to contact technical assistance, BEFORE I order the rings. This is what I have to do, as a service mechanic.
From there, I would not know on the polymer pistons, as I am told they are in the 02 models. This is for the cold knock issues that are out there, NOT the oil consumption issue.
Best to you, c4c5
 

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Discussion Starter · #10 ·
c4c5 - thanks for your comments. I bought the only z06 this dealership received... and they just dont' seem to know all they should to direct me with some of these problems. I appreciate your response (and the others).. I'll see how this pans out after the test.

-jbl
 

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My car does this --> :guiness: I bought mine in June of this year. Yesterday I added the 2nd quart at 2600 total miles. During the break-in period, it used zero oil for the first 500 miles. I knew about the consumption issues before I bought, so I've been watching it closely and keeping a log. I'm going to discuss it with the dealer tomorrow. I'll let you know what I find out.
 
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