from one oil change to the next ? 1quart , 1/2 quart ???? car is being driven pretty agressively by myself .....also, anyone use the 0w30 , over the 5w30 mobil 1 that is recomended by gm...oh yeah, almost 158k on the mileage

 

2002 Coupe and I don't drive it easy, I have never noticed any burning between changes.

 

I used to have to add a quart between changes...i don't drive the car as much nor as hard as I used too which means I haven't had to add any lately

 

You might not be burning oil you may want to do a little research and get an oil catch can contact forum vendor Chip @CCA good luck

 

You haven't filled out your profile but is yours an 01 Z06 by any chance? There's a TSB out for 01s that needed modified piston rings.

Mind you with 158k I'd expect some oil burn. My 02 with 45k uses very little. I maybe add a pint and normally go a year between changes.

Courtesy: Corvette Action Center Knowledgebase
1999 - 2002: Service Bulletin: Higher Than Expected Oil Consumption
Subject: Higher Than Expected Oil Consumption. (Repalce Rings and Engine Valley Cover)

Source: Chevrolet Dealer Technical Service Bulleting Number 01-06-01-023A

Models: 1999-2001 Chevrolet Camaro, 1999-2002 Chevrolet Corvette, 1999-2001 Pontiac Firebird, with 5.7L Engine (VINs G, S—RPOs LS1, LS6)
This bulletin is being revised to add model years for the Corvette, information on the LS6 engine and parts information. Please discard Corporate Bulletin Number 01-06-01-023 (Section 6 - Engine).
Condition
Some owners may comment on higher than expected oil consumption. When checked, the oil consumption could be in the range of 400-600 miles per quart (700-1000 km/L).
On the LS6 engine only, the technician may find oil behind the engine throttle plate and in the intake manifold.
Cause
The cause for this condition may be an interaction between the piston rings and the cylinder bore in vehicles that are operated at higher RPMs—typically manual transmission vehicles driven in a manner where the engine is frequently or consistently operating at greater than 3200 RPM.
On the LS6 engine only, the engine has a unique aluminum valley cover that has composite oil separating baffles and PCV plumbing incorporated. In some cases, the PCV baffle may not be properly sealed to the valley cover, causing oil to enter the PCV system.
Correction
On the LS6 engine only, replace the engine valley cover if oil is found behind the throttle body or in the intake manifold before replacing the piston ring. Refer to Engine Valley Cover Replacement in the Engine Mechanical - 5.7L subsection of the Corvette Service Manual.
A new set of piston rings is currently available through GMSPO. The new rings are part of a complete piston ring kit. Install only the number 2 compression ring and the oil expander ring from the piston ring kit. All other rings in the piston ring kit should be discarded. The original number 1 compression ring and the oil ring rails should be re-used in their original positions on the piston. All pistons should be used in the same cylinder bore.
Important
Do not dress or hone the cylinder bore. Nothing should be done to change the bore finish for this condition. Changing the bore finish may aggravate the condition.
Refer to the Unit Repair Manual for appropriate ring removal and replacement procedure.
The number 1 compression ring and the upper and lower oil expander rails are re-used because they are already broken in for the bore that they are in. The new number 2 compression ring is made with a very sharp edge that will break in quickly.
Changing only the piston rings noted, with no change in driving style, should change oil consumption to an acceptable level. Changes in driving style that reduce the amount of time spent at higher RPMs will also positively affect oil consumption.
In addition to the standard size piston ring kit listed below, a 0.25 mm oversized piston ring kit is available. The oversized piston ring kit should only be used in those rare instances where the cylinder bore size has been machined larger to accommodate the 0.25 mm oversized piston rings.
Parts Information
Part NumberDescriptionQty

12568002 Valley Cover 1
88984247 Ring Kit, Piston 8
Warranty Information
For vehicles repaired under warranty, use:
Labor OperationDescriptionLabor Time
J0250Manifold or Gasket Intake - Replace ManifoldUse Published
Labor Operation Time
J1307Piston, Rod and/or Rings—Replace, Both BanksUse
Published Labor Time

© Copyright General Motors Corporation.

 

I wouldn't expect much oil loss except from the 01 issue listed by DeeGee. My '99 with 188k miles gets around ½ the volume of a spray paint cap in the oil catch can between oil changes.

 

'02 Z06 with 50K on the clock. Usually add 1/2 qt. between oil changes.

 

nope, regular 1999 c5 ls1

 

Havent Had the vette long enough to notice but my truck with 43k burns about a quart every 3-4k miles..... my wrangler with 125k doesnt burn or leak a drop ever.... go figure haha

 

Mine does a quart most times between changes. (Nearly 8K per change.)

One thing that just came to me was previously they were putting in 6 qts for a oil change with a filter, that was wrong, it is 7 qts with a filter change. So this time we'll see what happens.

 

I'm on my third c-5 and none of them used any oil between changes. A guy I know has a 2001 and his uses a quart every 500 miles!
I don't know why? Dave

 

It's because he got unlucky with an LS1 that has one slightly smaller ring in the piston ring set, it is stated in the SB above. Your friends' is a worst case situation, depending on when it was made determines what engine build those got. Many times in the standard C5's it is more like a quart per change or if you are really driving it hard it will gulp some oil. But more so specifically with a range of Z06's really got hit hard by that ring set.

 

In that case I'd put it down to regular wear on a 158k engine