Half quart overfill
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Instructor
Joined: Jan 2005
Posts: 141
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From: Mt. Zion Central Illinois
Half quart overfill
Received a letter from GM offering a free LOF for my car. Made the appointment and had it done. No problem. Always treated well at the dealership. Put 100 miles on it and then noticed the paper said 6 qts of oil added. Checked mine and sure enought 1/2 qt over. Called them and they took care of it immediately. My question is can 1/2 qt over cause a problem? Only problems so far: Left fuel sending unit, blown fuse in the evaporative system (caused a fuel warning light). Love the car!
Safety Car
Joined: Jul 2004
Posts: 3,867
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From: Wantagh,L.I. New York
Originally Posted by liberty
Received a letter from GM offering a free LOF for my car. Made the appointment and had it done. No problem. Always treated well at the dealership. Put 100 miles on it and then noticed the paper said 6 qts of oil added. Checked mine and sure enought 1/2 qt over. Called them and they took care of it immediately. My question is can 1/2 qt over cause a problem? Only problems so far: Left fuel sending unit, blown fuse in the evaporative system (caused a fuel warning light). Love the car!
Drifting
Joined: Sep 2004
Posts: 1,447
Likes: 12
From: Jersey Shore
I find it pretty sad that a Chevy service dept. does not know how much oil to put in the car. It was 5.5 quarts too with the C5 if I remember correctly. Based on that alone I can't see why they would put in 6 qts. I'm glad to hear that they squared it away for you though.
Safety Car
Joined: Jun 2005
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From: DFW This user does not support or recommend the product or service displayed in the ad to the right
Originally Posted by Hoonose
The manual specifically says to add an extra quart over normal if you're gunna race!
Safety Car
Joined: Jul 2001
Posts: 4,456
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From: Spicewood, Texas, USA TX-Texas
Originally Posted by Hoonose
The manual specifically says to add an extra quart over normal if you're gunna race!
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Le Mans Master
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From: Muscle Shoals, AL
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Originally Posted by Hoonose
The manual specifically says to add an extra quart over normal if you're gunna race!
My first oil change at a Bentley Chevy in Florence, AL was 1 quart over. (6-1/2 quarts). I took a weekend trip right after the change and put almost 1000 miles on it. Then took it back when I got back to town and they drained it out. No problems.
The owner's manual says an overfill can damage your engine, but it also says to use 1 extra quart for Autocrossing. ?
I wouldn't worry. I've had no problems.
The funny part was the service manager said the dipstick wasn't very accurate.
Who's the dipstick? I made them write a ticket when they drained the extra quart, just for records. By the way, I've been driving 100 miles to a much better dealer with much better service. Larry Clark Chevy in Aberdeen, MS. Worth the drive for me. Glad you're loving the car. With about 10.5k miles, I'm still loving every minute of it. 
Team Owner
Joined: Feb 2000
Posts: 53,529
Likes: 77
From: Arizona
Originally Posted by C6400hp
Where does the owners manual say that?
competitive driving, the engine may use more
oil than it would with normal use. Low oil levels can
damage the engine. Be sure to check the oil level
often during racing or other competitive driving and
keep the level at or near 1 quart (1 L) above the
upper mark that shows the proper operating range
on the engine oil dipstick. For information on
how to add oil, see Engine Oil on page 5-14. After
the competitive driving, remove excess oil so
that the level on the dipstick is not above the upper
mark that shows the proper operating range.
Team Owner
Joined: Oct 2004
Posts: 27,420
Likes: 64
From: San Clemente CA
Originally Posted by arcticblast
My first oil change at a Bentley Chevy in Florence, AL was 1 quart over. (6-1/2 quarts). I took a weekend trip right after the change and put almost 1000 miles on it. Then took it back when I got back to town and they drained it out. No problems.
The owner's manual says an overfill can damage your engine, but it also says to use 1 extra quart for Autocrossing. ?
I wouldn't worry. I've had no problems.
The funny part was the service manager said the dipstick wasn't very accurate.
Who's the dipstick? I made them write a ticket when they drained the extra quart, just for records. By the way, I've been driving 100 miles to a much better dealer with much better service. Larry Clark Chevy in Aberdeen, MS. Worth the drive for me. Glad you're loving the car. With about 10.5k miles, I'm still loving every minute of it.
Race Director
Joined: Dec 2004
Posts: 10,262
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From: Manhatten Beach, California
St. Jude Donor '05 thru '11,'18,'20,'21,'24,'25, '26
Originally Posted by liberty
Received a letter from GM offering a free LOF for my car. Made the appointment and had it done. No problem. Always treated well at the dealership. Put 100 miles on it and then noticed the paper said 6 qts of oil added. Checked mine and sure enought 1/2 qt over. Called them and they took care of it immediately. My question is can 1/2 qt over cause a problem? Only problems so far: Left fuel sending unit, blown fuse in the evaporative system (caused a fuel warning light). Love the car!
Glad you love the car. same here!
Advanced
Joined: Feb 2005
Posts: 62
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From: Azle TX
Originally Posted by arcticblast
The funny part was the service manager said the dipstick wasn't very accurate. Who's the dipstick?
Who's the dipstick?
Safety Car
Joined: Jul 2001
Posts: 4,456
Likes: 6
From: Spicewood, Texas, USA TX-Texas
Originally Posted by hburks
There must be some car-to-car variation somewhere. Just did my first oil and filter change last weekend. Added the prescribed 5-1/2 quarts, did the warm up then wait routine and then checked the level. Had to add the other half quart to get it up to the full mark. So, I wouldn't go too hard on the dealer if they put in 6.
The best thing to do is put in the specified amount of oil, start it up, then let it drain down a half hour or so and check the level on the dipstick. If the dipstick is INCORRECT, I would take it back to the dealer for replacement. If the car is out of warranty, I would just mark the full level with a file and use that instead of the factory marks.
Team Owner
Joined: Sep 2000
Posts: 25,019
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From: Far NW 'burbs of Chicago
St. Jude Donor '13
There is a lot of discussion (argument) about this.
The manual does say 5.5 qts for standard cars, 6.0 qts for Z51 (because of the oil cooler). The question is, how much of that extra 1/2 qt in the Z51 cars will actually drain out during the oil change?
Different folks give different answers.
The manual does say 5.5 qts for standard cars, 6.0 qts for Z51 (because of the oil cooler). The question is, how much of that extra 1/2 qt in the Z51 cars will actually drain out during the oil change?
Different folks give different answers.
Team Owner
Joined: Oct 2004
Posts: 27,420
Likes: 64
From: San Clemente CA
Originally Posted by Gearhead Jim
There is a lot of discussion (argument) about this.
The manual does say 5.5 qts for standard cars, 6.0 qts for Z51 (because of the oil cooler). The question is, how much of that extra 1/2 qt in the Z51 cars will actually drain out during the oil change?
Different folks give different answers.
The manual does say 5.5 qts for standard cars, 6.0 qts for Z51 (because of the oil cooler). The question is, how much of that extra 1/2 qt in the Z51 cars will actually drain out during the oil change?
Different folks give different answers.
Safety Car
Joined: Jul 2001
Posts: 4,456
Likes: 6
From: Spicewood, Texas, USA TX-Texas
Originally Posted by Gearhead Jim
There is a lot of discussion (argument) about this.
The manual does say 5.5 qts for standard cars, 6.0 qts for Z51 (because of the oil cooler). The question is, how much of that extra 1/2 qt in the Z51 cars will actually drain out during the oil change?
Different folks give different answers.
The manual does say 5.5 qts for standard cars, 6.0 qts for Z51 (because of the oil cooler). The question is, how much of that extra 1/2 qt in the Z51 cars will actually drain out during the oil change?
Different folks give different answers.
One question I wish Gene (Fred Beans) or Bob (Fitchner Chevrolet) would answer for us...Does the LS2 dipstick have the same part number for Z51 and non-Z51?
