Too Much Oil
Thread Starter
Racer
Joined: Aug 2005
Posts: 412
Likes: 0
From: New York NY
Too Much Oil
Went to the dealer for the first oil change at 2600 miles and did not notice that they put 7qts in until I got home and checked oil level then the service receipt. 
The way home was mostly rush hour in NYC nothing crazy in terms of oil pressure, revs or speed, as its all bumper to bumper. Will drain the extra quart or so but what kind of dammage if any might the engine have been exposed to for a fifty mile run? I don’t think its a big deal but want some feed back as I am due to go back to that dealer for other issues and want them to understand that they do not run the PLATINUM service center that they think they do.
Thanks...
The way home was mostly rush hour in NYC nothing crazy in terms of oil pressure, revs or speed, as its all bumper to bumper. Will drain the extra quart or so but what kind of dammage if any might the engine have been exposed to for a fifty mile run? I don’t think its a big deal but want some feed back as I am due to go back to that dealer for other issues and want them to understand that they do not run the PLATINUM service center that they think they do.
Thanks...
Le Mans Master
Joined: Aug 2005
Posts: 5,335
Likes: 0
From: Eagle River AK
St. Jude Donor '06-'07-'08-'09-'10,'14
I'm sure you did no harm and I remember reading on here about a owners manual recommendation to add an extra quart if racing. I'd check my manual but don't have it yet (long story). I'd certainly complain, in a professional manner, as to their error and the trouble it caused you. I would expect at least my next oil change would be free.
Team Owner
Joined: Oct 2004
Posts: 27,420
Likes: 64
From: San Clemente CA
Originally Posted by MADinAK
I'm sure you did no harm and I remember reading on here about a owners manual recommendation to add an extra quart if racing. I'd check my manual but don't have it yet (long story). I'd certainly complain, in a professional manner, as to their error and the trouble it caused you. I would expect at least my next oil change would be free.
I extra quart while racing and drain it out.
Instructor
Joined: Jan 2006
Posts: 118
Likes: 0
From: el sobrante ca
dagoogooman,
I have a stock c6, z51, that I track and read the instruction manual about adding 1 extra quart for the track and then draining it out for the street.
This logoc makes no sense to me, if the extra quart is not a probelm on the track, with 6,000 rpm straights and 1g turns, why would it be a problem on the street ??
I posed that question on this forum and several responses convinced me to just leave the extra quart in, that it will cause no problems.
So, I've had an extra quart thru 3 months and 4 track days. No ill effects I can discern. I say, leave it in.
I have a stock c6, z51, that I track and read the instruction manual about adding 1 extra quart for the track and then draining it out for the street.
This logoc makes no sense to me, if the extra quart is not a probelm on the track, with 6,000 rpm straights and 1g turns, why would it be a problem on the street ??
I posed that question on this forum and several responses convinced me to just leave the extra quart in, that it will cause no problems.
So, I've had an extra quart thru 3 months and 4 track days. No ill effects I can discern. I say, leave it in.
Team Owner
Joined: Feb 2000
Posts: 53,527
Likes: 77
From: Arizona
Originally Posted by highflyer
So, I've had an extra quart thru 3 months and 4 track days. No ill effects I can discern. I say, leave it in.
Just gnawing on people's minds!
Race Director
Joined: May 2001
Posts: 15,324
Likes: 2,079
From: Guelph, Ontario
Originally Posted by VET4LES
I extra quart while racing and drain it out.
Team Owner
Joined: Oct 2004
Posts: 27,420
Likes: 64
From: San Clemente CA
Originally Posted by Patman
Why drain it out though? That extra quart is good for daily driving too. I run an extra quart in my C5 all the time, and my oil analysis results look great and I have zero consumption.
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Race Director
Joined: May 2001
Posts: 15,324
Likes: 2,079
From: Guelph, Ontario
Originally Posted by VET4LES
You run the risk of foaming and that's not good. This is caused by the crankshaft churning up the oil. The reason it not a problem on the track is the constant turns. The extra quart guarantee's the pickup will always have suction.
Melting Slicks
Joined: Jun 2006
Posts: 2,208
Likes: 1
Originally Posted by highflyer
dagoogooman,
I have a stock c6, z51, that I track and read the instruction manual about adding 1 extra quart for the track and then draining it out for the street.
This logoc makes no sense to me, if the extra quart is not a probelm on the track, with 6,000 rpm straights and 1g turns, why would it be a problem on the street ??
I posed that question on this forum and several responses convinced me to just leave the extra quart in, that it will cause no problems.
So, I've had an extra quart thru 3 months and 4 track days. No ill effects I can discern. I say, leave it in.
I have a stock c6, z51, that I track and read the instruction manual about adding 1 extra quart for the track and then draining it out for the street.
This logoc makes no sense to me, if the extra quart is not a probelm on the track, with 6,000 rpm straights and 1g turns, why would it be a problem on the street ??
I posed that question on this forum and several responses convinced me to just leave the extra quart in, that it will cause no problems.
So, I've had an extra quart thru 3 months and 4 track days. No ill effects I can discern. I say, leave it in.
Thread Starter
Racer
Joined: Aug 2005
Posts: 412
Likes: 0
From: New York NY
Originally Posted by Whiterock1
Can push through seals--especially valve cover gaskets and rear main, I've heard as worse problem when I owned an auto repair shop. The excess would be 'stored' in valve covers, supposedly. However, I sure as hell wouldn't want to overfill to the extent that happened--what a mess! Probably a qt isn't too bad, but I would still drain it out just to be on the safe side.
Racer
Joined: Oct 2005
Posts: 324
Likes: 0
From: Holly Michigan
Too much oil can create several issues.
Over filling can cause the oil to aerate. Thus causing eratic oil pressure not recognizable by your vehicles sensor, this sensors response time is not so accurate. Aerating the oil MAY do the following; create friction thus causing reduced performance and accelerating the degredation of the oil. Aeration MAY also cause erosion of bearing shells and oil pump porting.
But, the most likely result of overfilling your oil would be excessive oil consumption through your PCV system. Which MAY cause detonation and or misfire. Also, premature catalytic contamination.
Probably best not to ovrerfill.
These are all MAY be effects. But what do I know. Just my opinion.
Over filling can cause the oil to aerate. Thus causing eratic oil pressure not recognizable by your vehicles sensor, this sensors response time is not so accurate. Aerating the oil MAY do the following; create friction thus causing reduced performance and accelerating the degredation of the oil. Aeration MAY also cause erosion of bearing shells and oil pump porting.
But, the most likely result of overfilling your oil would be excessive oil consumption through your PCV system. Which MAY cause detonation and or misfire. Also, premature catalytic contamination.
Probably best not to ovrerfill.
These are all MAY be effects. But what do I know. Just my opinion.
Thread Starter
Racer
Joined: Aug 2005
Posts: 412
Likes: 0
From: New York NY
Originally Posted by AFTERBURN
Too much oil can create several issues.
Over filling can cause the oil to aerate. Thus causing eratic oil pressure not recognizable by your vehicles sensor, this sensors response time is not so accurate. Aerating the oil MAY do the following; create friction thus causing reduced performance and accelerating the degredation of the oil. Aeration MAY also cause erosion of bearing shells and oil pump porting.
But, the most likely result of overfilling your oil would be excessive oil consumption through your PCV system. Which MAY cause detonation and or misfire. Also, premature catalytic contamination.
Probably best not to ovrerfill.
These are all MAY be effects. But what do I know. Just my opinion.
Over filling can cause the oil to aerate. Thus causing eratic oil pressure not recognizable by your vehicles sensor, this sensors response time is not so accurate. Aerating the oil MAY do the following; create friction thus causing reduced performance and accelerating the degredation of the oil. Aeration MAY also cause erosion of bearing shells and oil pump porting.
But, the most likely result of overfilling your oil would be excessive oil consumption through your PCV system. Which MAY cause detonation and or misfire. Also, premature catalytic contamination.
Probably best not to ovrerfill.
These are all MAY be effects. But what do I know. Just my opinion.
