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Mechanical Maintenance: Break-in / Oil & Fluids / Servicing Discussions on mechanical maintenance and servicing of your Camaro

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Old 06-23-2009, 09:07 PM   #1
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V6 Oil Burn

I remember a while back we were talking about the CTS DI 3.6 and how it burned oil a little. Just wondering if anyone with the V6 has noticed this at all or if it is something that they appear to have fixed already.
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Old 06-23-2009, 09:07 PM   #2
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Old 06-30-2009, 07:33 AM   #3
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oil burn

I too am interested. Anyone with the V6 using oil in theirs? I'd say a quart in 3k is normal?
Anyone?
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Old 06-30-2009, 07:36 PM   #4
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During the break in process, it is normal for any engine to burn oil.

I could elaborate, but the process is completely normal/harmless. Expect to see this up to 3-5000 miles.
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Old 07-06-2009, 02:40 PM   #5
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I understand that it is normal, the question was based on the fact that the 3.6 in the CTS was still burning oil at 15k. It isn't something that is gonna stop me from buying the car, just a question as to if the issue has been solved.
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Old 08-04-2009, 09:19 AM   #6
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Bump...

I am seeing a lot of black soot in the exhaust tips. Is this from burning oil or normal? Will it stop?
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Old 08-04-2009, 10:52 AM   #7
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I am seeing a lot of black soot in the exhaust tips. Is this from burning oil or normal? Will it stop?
That's from running rich at times. My mom's 2005 Acura RL did that too...Honda insisted that it's normal for that car, and GM will probably do the same for the Camaro.
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Old 08-04-2009, 11:21 AM   #8
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My 08 CTS with the 3.6 DI did burn oil, it was about 1/2 a quart between oil changes every 6k miles. The quicklube tech pointed it out when I got my first oil change after that I checked it every month just to be sure i wasnt running her dry. I never had any mechanical problems with the car, it just used a bit of oil.
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Old 08-04-2009, 11:34 AM   #9
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Good to know. Thanks. I'll just keep an eye on it and keep the tips cleaned up.
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Old 11-04-2009, 01:39 PM   #10
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I just hit 10K miles on my v6 camaro. It has 30% oil life left. I went to check the oil and the dip stick was bone dry. I had checked it when the oil change was first done, and it was full. So mine burns A LOT. It's going in to the dealer today.
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Old 11-04-2009, 01:57 PM   #11
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You need to be looking at the white portion of your spark plugs, not the exhaust tips. On a proper running engine, the plugs should look like they just came out of the box or very slight tan color.
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Old 11-04-2009, 06:48 PM   #12
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2200 miles and is still full. I check it frequently and expect to change it soon.
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Old 11-04-2009, 07:34 PM   #13
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Ok... so if a motor is burning any oil at all wouldn't that indicate piston ring blow by or some type of engine leakage whether internal or external?? I'm not an engineer but to me there are only two ways for an engine to loose oil 1, leakage through faulty gasket seating or 2, faulty engine break in procedures causing piston rings not to seat properly to the cylinder wall....thereby causing engine blow by when internal pressures exceed the rings capability to hold that pressure.
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Old 11-05-2009, 06:28 PM   #14
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2,155 miles and still full, just got the first oil change.
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Old 11-05-2009, 07:35 PM   #15
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1500 and still full
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Old 11-05-2009, 08:27 PM   #16
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Quote:
Originally Posted by Susantroy1 View Post
Ok... so if a motor is burning any oil at all wouldn't that indicate piston ring blow by or some type of engine leakage whether internal or external?? I'm not an engineer but to me there are only two ways for an engine to loose oil 1, leakage through faulty gasket seating or 2, faulty engine break in procedures causing piston rings not to seat properly to the cylinder wall....thereby causing engine blow by when internal pressures exceed the rings capability to hold that pressure.
actually... i think you can get a fair amount of oil from the PCV... I noticed my intake had a surprising amount of oil in it... Really kind of hard to tell from this picture but you can see the inside of the intake tube where the PCV tube comes in is wet with oil:

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Old 11-06-2009, 02:29 PM   #17
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actually... i think you can get a fair amount of oil from the PCV... I noticed my intake had a surprising amount of oil in it... Really kind of hard to tell from this picture but you can see the inside of the intake tube where the PCV tube comes in is wet with oil:

Agreed but that is minuscule wouldn't even show up on the dip stick. folks on the OPs are talking about 1/2 - 1 full quart low thats what...7-15% of the cars oil capacity?? Come-on scrming, I would think surely you would have to raise an eyebrow on that much loss. If I loose 7-15% of my oil in 6k you can bet your last dollar I'm looking for a reason as to why.... not marking it off as simply normal operating parameters
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Old 11-06-2009, 03:26 PM   #18
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Agreed but that is minuscule wouldn't even show up on the dip stick. folks on the OPs are talking about 1/2 - 1 full quart low thats what...7-15% of the cars oil capacity?? Come-on scrming, I would think surely you would have to raise an eyebrow on that much loss. If I loose 7-15% of my oil in 6k you can bet your last dollar I'm looking for a reason as to why.... not marking it off as simply normal operating parameters
Actually OP was talking about "a little" bit of oil.. I was pretty amazed how much oil came out of my intake tube!

Your post said that there was only two ways to loose oil:

1) faulty gasket
2) blow from the piston rings

I simply pointed out another place you can loose oil... and while it may not be a lot, it is certainly some... I mean I had a fair amount in the tube... how much actually made it through the tube into the motor that I don' know about? What's interesting is on some of my hard launch videos you can actually seek the exhaust smoking a bit when the car really winds out... assuming this is some of the oil from the PCV...

I have two LLT motors in my drive way... neither burn oil...
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Old 11-06-2009, 04:11 PM   #19
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I have two LLT motors in my drive way... neither burn oil...
Amen brother.... Thats why 1/2-1 qt every 6k indicates a mech problem would you agree?
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Old 01-17-2010, 10:34 AM   #20
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Is anyone else seeing this in their V6? I have about 8k miles on my car. I use Mobil 1 and I have to add about a 1/2 quart every 3 to 4k. My dealer said it is normal. (I am heading out to add another 1/2 quart).
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Old 01-17-2010, 02:11 PM   #21
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1/2 qt in 3 - 4,000 miles is next to nothing, I wouldn't give it a second thought. 1 qt in 1 to 2,000, I'd start to wonder why.

An engine has to use some oil. Anyone that doesn't agree with that can explain to me how they would expect an engine to last if it had rings that scraped cylinders completely dry on every stroke. Or valve seals that kept valve stems completely sealed from any oil. Or pcv systems that didn't recirc some oil vapors up into the intake...

Cylinders are honed in a cross hatch pattern for a reason, to leave a very thin film of oil for the rings and pistons to slide on. That minor amount burns off in every power stroke. At the same time an engine is using a very small amount of oil, it is adding other things such as condensation and combustion by-products. Which makes some people think that after 3 - 5,000 miles and they check the dipstick to find it perfectly full, that motor didn't burn a drop of oil. Sure it did, a very small amount, and it also added a very small amount of other stuff = still looks full.

Take a brand new car and never check the oil until 10,000 miles? I'd be very surprised if anything showed on the dipstick. New cars use a little more oil as they are breaking in. Don't replace that oil and now the lower volume will burn off even faster. The condensates and byproducts become a higher percent compared to what oil is left, take a long highway trip and it burns off like crazy.

Just my opinion but if folks opened their hoods more often and kept it topped off, wouldn't be an issue to be concerned with. 1/2 qt or so between 3 - 5,000 mile oil changes is nothing. Being really low after 10K of not checking it, I wouldn't be surprised by that either. When I was a tech many years ago, saw it all the time. Especially when leasing became popular, people forgot how to open their hoods. Saw tons of leased cars pull in at around 15,000 miles with the low oil light on and a cheesed off customer that his car is "burning oil". Let me show you where the hood latch is, and here's the dipstick, and here is where you add oil.... oh no, this is a leased car, I just put gas in it.
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Old 01-18-2010, 12:00 AM   #22
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Most dealers will tell you that burning a quart of oil in 1 - 2,000 miles falls within specs and is not considered excessive. I don't agree, but that is what they will tell you. That's why you are supposed to check the oil at every other gas fill-up or sooner.
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Old 01-18-2010, 07:16 AM   #23
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Agreed but that is minuscule wouldn't even show up on the dip stick. folks on the OPs are talking about 1/2 - 1 full quart low thats what...7-15% of the cars oil capacity?? Come-on scrming, I would think surely you would have to raise an eyebrow on that much loss. If I loose 7-15% of my oil in 6k you can bet your last dollar I'm looking for a reason as to why.... not marking it off as simply normal operating parameters
I'll admit I have no experience with the 3.6, but I can tell you LS based engines can easily burn a qt or more of oil between changes through the PCV system, including LS1's that only have a 6qt capacity, which is ~16.67% of it's capacity.

As for the OP's post, I could see if you've ran it pretty hard (high rpm's burn oil on any engine) maybe it being that low on oil, but I would take it to the dealer and have them check it out to be sure. You said it wasn't showing on the dipstick, were you getting a warning message for oil level? How long after you turned your car off did you wait to check the oil? Did you fill it up and how much did it take?
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Old 01-18-2010, 08:54 AM   #24
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1/2 qt in 3 - 4,000 miles is next to nothing, I wouldn't give it a second thought. 1 qt in 1 to 2,000, I'd start to wonder why.

An engine has to use some oil. Anyone that doesn't agree with that can explain to me how they would expect an engine to last if it had rings that scraped cylinders completely dry on every stroke. Or valve seals that kept valve stems completely sealed from any oil. Or pcv systems that didn't recirc some oil vapors up into the intake...

Cylinders are honed in a cross hatch pattern for a reason, to leave a very thin film of oil for the rings and pistons to slide on. That minor amount burns off in every power stroke. At the same time an engine is using a very small amount of oil, it is adding other things such as condensation and combustion by-products. Which makes some people think that after 3 - 5,000 miles and they check the dipstick to find it perfectly full, that motor didn't burn a drop of oil. Sure it did, a very small amount, and it also added a very small amount of other stuff = still looks full.

Take a brand new car and never check the oil until 10,000 miles? I'd be very surprised if anything showed on the dipstick. New cars use a little more oil as they are breaking in. Don't replace that oil and now the lower volume will burn off even faster. The condensates and byproducts become a higher percent compared to what oil is left, take a long highway trip and it burns off like crazy.

Just my opinion but if folks opened their hoods more often and kept it topped off, wouldn't be an issue to be concerned with. 1/2 qt or so between 3 - 5,000 mile oil changes is nothing. Being really low after 10K of not checking it, I wouldn't be surprised by that either. When I was a tech many years ago, saw it all the time. Especially when leasing became popular, people forgot how to open their hoods. Saw tons of leased cars pull in at around 15,000 miles with the low oil light on and a cheesed off customer that his car is "burning oil". Let me show you where the hood latch is, and here's the dipstick, and here is where you add oil.... oh no, this is a leased car, I just put gas in it.
Just add 1/2 quart extra at the next oil change.
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Old 01-18-2010, 09:06 AM   #25
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Oil can be very tricky on why it’s gone sometimes.
But being diligent on checking it, if you have a problem or not is smart insurance. As it may be full one day, and a quart low the next.

Ya don't wanna be racing Vetts on the low days
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