[BLACK/BLACKZ06]

After 5000 miles...2 oil changes, one at 2000 miles the other at 4000 miles because the oil was verrrry black...average 750 miles per quart of oil. My dealer is looking to replace the rings... The question: is it logical or even practical for me to ask them to drop a cam in while it is apart, if so what cam would you sugest??? /phpBB/images/smiles/icon_biggrin.gif

 

[fcalmes]

So far, it looks like my oil consumption is starting to slow down. The wife went 2000 mile after her oil change before adding a quart.

I asked your particular question to a GM rep. I was thinking, since they might have to crack into the engine, a little cam change wouldn't hurt. /phpBB/images/smiles/icon_biggrin.gif GM rep told me it would void the warranty, even if it was a different GM cam.

I have no affiliation with these people, but if I was going to get a cam, I would check with Katech. Those people are in know and have their act together!! /phpBB/images/smiles/icon_cool.gif

 

[BLACK/BLACKZ06]

Thanks Frank...I sent them an email requesting support, cost and availability.

 

[MiZ06]

Just had my oil changed at 3,000 miles. Told my dealer that I had used 3 quarts of oil since picking up the car and he told me that I would need the new rings.

After talking with their one mechanic who works on vettes, I've decided to wait until after my next oil change to see if I am still using oil.

However, if and when I decide to do this (it's all under warranty) does anyone know of a dealership in MD, VA or Delaware that actually does have a shop that could do this job?

 

[C5David]

According to my dealer, you need at least 4K miles on your Corvette, and you need to be burning more than one quart per 500 miles. Maybe that's not always the case, but that's what my dealer said.

 

[BLACK/BLACKZ06]

My dealer told me that 500 miles/quart was acceptable by GM standards...And I said that was Bull $hit, I’ve owned 4 vetts including a 97 Coupe and have never had any problems with oil burning... his reply was "if I insisted on a ring replacement, he would contact Engineering and get it done."

Doug

 

[c4c5specialist]

Hello there members,
As for the oil consumption issues, in order to do an accurate consumption test, the vehicle must start doing a test, AFTER 5000 miles, and not before.
It may take up to this long for the engine to break in. And the published oil consumption specs are 1 quart in 2000 miles per a GM service bulletin issues recently.
As far as the issue, according to GM, you must start the test after 5000 miles, and check it for intervals of 500 miles, for another 2000.
This is the most accurate way to tell if you vehicle is using oil.
After this time, then a fix should be adddressed. Also, as you engine breaks in, you will use more oil the more you load the engine, as if you are driving aggressively.
Theses are thoughts, and there are some of you that already have this issue, and there are some that are seeing that after the mileage, your consumption has dropped.
Best to all, c4c5

 

[PA_Z06]

c4c5,
What about the people who will take years to get 5000 miles on there car. I will probably only average about 1000 miles a year on my Z.

 

[mrdatalife]

no offense here pa_z06, but 1000/year!?! the engine may not run long enough to burn any oil. /phpBB/images/smiles/icon_smile.gif /phpBB/images/smiles/icon_smile.gif /phpBB/images/smiles/icon_smile.gif

i plan to drive mine any chance i get.

-jason

 

[c4c5specialist]

Hi PA,
This is a tough call, as the consumption issue is usually due to running above 3000 RPM for an extended period of time.
I cannot answer your question, however, I would drive it more.
Best to ya, and sorry I could not answer your question, c4c5

 

[C5David]

C4C5,

About a week ago, when my dealer contacted GM, the GM engineer wanted to ensure just two things:

1. That I had at least 4000 miles, and
2. That I was burning more than 1 quart every 500 miles.

That was enough for GM to authorize a free ring job on my car.

In my case, I was at about 3950 miles, which was "close enough". But what's much more disturbing is that I burned at least a quart in about 300 miles. Given this rate of oil burn, I don't see how I could possibly wait until 5000 miles, and then go 2000 miles for an oil consumption test. It would just cost too much oil.

 

[PA_Z06]

c4c5,
Thanx for the response. I would love to drive the car more, but between the weather here in PA /phpBB/images/smiles/icon_frown.gif , working all kinds of crazy hours /phpBB/images/smiles/icon_frown.gif and work travel /phpBB/images/smiles/icon_frown.gif . I don't have time to pay attention.

 

[mmorse]

One qt in every 300 miles? I would turn it in. On the other forum, someone had GM buy back their GM for using 8 qts in 7500 miles. That's one qt every 900 miles. He said he had no problems getting GM to take it back. Other posters on that thread said there are also PCV problems and other factors beyond rings causing the problems. It's become a big issue at GM possibly causing the delay of the 2002.

One guy said GM has agreed to buy back 200 cars to date for this problem. Not sure if I believe that. Not sure I WANT to believe that.
I'm using a qt every 1800 to 2000 miles with 7300 miles on the car. That's much better than 300 miles but still a bit disconcerting.