C6 Oil consumption
Thread Starter
Heel & Toe
Joined: Sep 2004
Posts: 18
Likes: 0
From: Woodstock Georgia
C6 Oil consumption
I previously owned a new 1999 C5 Automatic and my neighbor owned a 2000 C5 6 speed. I had no problems with oil consumption. My neighbor used about one half quart every 1,000 miles. I understood that the LS1 with 6 speed had blow by at higher RPMs. The automatic C5 never hit these higher RPMs and did not have that problem. I own a C6 6 speed and I just checked the oil and it is down a little. I have less that 500 miles on the car and I wondered if other C6 owners with 6 speeds were seeing any oil usage or if this is normal break-in.
Racer
Joined: Dec 2003
Posts: 368
Likes: 17
From: Pittsburgh pa
3900 miles just added my second quart. Just so happeneds i got a call from the factory friday asking if i was happy with the car Yes Yes Yes, but i asked them about oil consumption and they said than a quart every 2000 miles was acceptable.
Safety Car
Joined: Mar 1999
Posts: 3,630
Likes: 8
From: Virginia Beach Virginia
Yup, heard that before...my '01 eats about a half quart every 1K miles...funny how my '94 never ate a drop of oil...same driving habits...sounds like GM is raising the BS flag again...
Race Director
Joined: Oct 2004
Posts: 10,089
Likes: 14
Originally Posted by Fritzmarine
I previously owned a new 1999 C5 Automatic and my neighbor owned a 2000 C5 6 speed. I had no problems with oil consumption. My neighbor used about one half quart every 1,000 miles. I understood that the LS1 with 6 speed had blow by at higher RPMs. The automatic C5 never hit these higher RPMs and did not have that problem. I own a C6 6 speed and I just checked the oil and it is down a little. I have less that 500 miles on the car and I wondered if other C6 owners with 6 speeds were seeing any oil usage or if this is normal break-in.
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Safety Car
Joined: Jul 2001
Posts: 4,661
Likes: 67
From: Ocean Springs MS
Originally Posted by Mark S.
Yup, heard that before...my '01 eats about a half quart every 1K miles...funny how my '94 never ate a drop of oil...same driving habits...sounds like GM is raising the BS flag again...
Team Owner
Joined: May 2004
Posts: 82,175
Likes: 1,319
From: McKinney TX
St. Jude Donor '21-'22-'23-'24
My C6 MN6 oil level is approx. in the middle of the cross-hatch area. Since I did not check it when I first got it, I don't know if it's actually used a half a quart or not. I've got 900 miles on the odo. No warnings from DIC.
Melting Slicks
Joined: Aug 2000
Posts: 2,019
Likes: 0
From: los gatos, ca
In 2001, they went to a 9lb ring from the previous 14 lb oil ring. I was unlucky enough to have have an ls1 burning 1 qt every 400 miles. Mine was among the most extreme cases. Pinging occured at almost any rpm under load.
I sued for a buyback. It only took one week after I started the process. Got everything I ever paid for the car plus TTL+2. 6 weeks before I turned that car over they re-ringed it with the new rings. Re-ring was done at 17K miles, about a week after my settlement with GM. Kept car until 19K miles (took them a while to arrange the reposession). At 19K miles, 2K after the re-ring, the dipstick shows *ZERO* consumption. I mean not even a little drop. I *KNEW* the re-ringing fixed the problem the instant I drove off with it as the pinging was gone and SOTP power was up a lot. Also, my autotap showed no more KR.
The only reason I didn't go out and buy a 2002 is because they weren't offering the Z06 in a targa.
I sued for a buyback. It only took one week after I started the process. Got everything I ever paid for the car plus TTL+2. 6 weeks before I turned that car over they re-ringed it with the new rings. Re-ring was done at 17K miles, about a week after my settlement with GM. Kept car until 19K miles (took them a while to arrange the reposession). At 19K miles, 2K after the re-ring, the dipstick shows *ZERO* consumption. I mean not even a little drop. I *KNEW* the re-ringing fixed the problem the instant I drove off with it as the pinging was gone and SOTP power was up a lot. Also, my autotap showed no more KR.
The only reason I didn't go out and buy a 2002 is because they weren't offering the Z06 in a targa.
Platinum Supporting Vendor
Joined: Sep 2001
Posts: 5,730
Likes: 270
From: VENTURA Ca
All I can tell you is that at 400 miles, when I changed the heads, there was a BUNCH of oil in the intake ports.
I only drove it 200 miles with the heads and cam before I pulled the motor and put in a 427.
BTW My 427 doesn't use oil.
I only drove it 200 miles with the heads and cam before I pulled the motor and put in a 427.
BTW My 427 doesn't use oil.
Race Director
Joined: Oct 2004
Posts: 10,089
Likes: 14
Originally Posted by rwpatte
1100 miles. No oil consumption. Checked oil after delivery. It was at the top of hatch marks. Hasn't changed.
Team Owner
Joined: Jun 2001
Posts: 55,394
Likes: 1
Sorry guys, but i have a Twin Turbo car and I dont burn the oil that was being burned when they had the Ring problem in the 01 C5's and I I dont burn the oil that is being burned in this thread. Just thought I'd let ya know
Team Owner
Joined: Oct 2004
Posts: 25,583
Likes: 16,942
I've been driving the car pretty hard after 500 miles, and at 2K, mine's also exactly halfway between the two crosshatches on the dipstick. That's very good in my experience. This engine seem pretty bullet-proof.
