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Got an oil changed and a bit overfilled

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Old Jun 8, 2013 | 06:29 PM
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Default Got an oil changed and a bit overfilled

I recently got an oil change on my 1978 anniversary model L-48 . I checked the oil the other day and it was over the full line . Am I O.K. till I get it serviced again ?
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Old Jun 8, 2013 | 06:52 PM
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Originally Posted by cb98coupe
I recently got an oil change on my 1978 anniversary model L-48 . I checked the oil the other day and it was over the full line . Am I O.K. till I get it serviced again ?
Too much oil is not a good thing. Take it back to the shop and ask them to do it again.

Les
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Old Jun 8, 2013 | 06:55 PM
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Just drain a little out. Take you all of five minutes.
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Old Jun 8, 2013 | 06:56 PM
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Originally Posted by AGVI
Too much oil is not a good thing. Take it back to the shop and ask them to do it again.

Les
That depends on how "overfilled" it is. A 1/8" or so over the full line I would not worry about.
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Old Jun 8, 2013 | 06:58 PM
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Originally Posted by scottw
Just drain a little out. Take you all of five minutes.
I don't have ramps or anything to get the car up in the air . Can I reach the drain plug with the car on the pavement .
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Old Jun 8, 2013 | 06:59 PM
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Originally Posted by paul 74
That depends on how "overfilled" it is. A 1/8" or so over the full line I would not worry about.
I would say about 1/8 to 1/4 of an inch .
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Old Jun 8, 2013 | 07:00 PM
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Not sure how much it is over the line but over is not good. I am spending thousands of dollars right now because the place I took my diesel truck to over filled by 4 quarts and the oil foamed (new crank shaft, piston and ring's and other parts) and quit lubricating... they will not take responsibility so I'm eating it. Lesson learned is do my own oil changes and service the things I can. If it were my car I would drain some of the oil out if it is way over filled.
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Old Jun 8, 2013 | 07:20 PM
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Originally Posted by ShefmonC3
Not sure how much it is over the line but over is not good. I am spending thousands of dollars right now because the place I took my diesel truck to over filled by 4 quarts and the oil foamed (new crank shaft, piston and ring's and other parts) and quit lubricating... they will not take responsibility so I'm eating it. Lesson learned is do my own oil changes and service the things I can. If it were my car I would drain some of the oil out if it is way over filled.
Wow that's crazy !!!!! No way is it that overfilled , like I said a 1/4 inch over max .
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Old Jun 8, 2013 | 07:25 PM
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i'm not sure i've ever heard of anyone on this forum say that they took their car somewhere to have the oil changed......
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Old Jun 8, 2013 | 07:30 PM
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To be honest a quarter inch I wouldn´t worry about it.

But do what ever you feel is right.
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Old Jun 8, 2013 | 07:36 PM
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I'm not sure how much a 1/4" would effect it but after what happened to me I will check oil level anytime I let anyone touch my car or truck. I have since learned that a little under filled is better than over filled, over filled the crankshaft hitting the oil turns the oil into foam and then the oil pump is trying to pump foam, not oil (it can't). I cannot get under my '80 without ramps or a jack but bought a "jack" at NAPA and it came with "jack stands" and in minutes I can get the car up and secure to do minor under car service.
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Old Jun 8, 2013 | 07:49 PM
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Originally Posted by cb98coupe
I recently got an oil change on my 1978 anniversary model L-48 . I checked the oil the other day and it was over the full line . Am I O.K. till I get it serviced again ?
If your '78 has the same oil capacity as my '73, they probably put in exactly 5 quarts thinking that was the correct capacity. My pan only holds about 4 quarts with 1/2 quart or more in the filter. It usually takes right at 4 3/4 quarts to get to the full mark. If I forget and put all 5 quarts in, it ends up over full in the 1/8" to 1/4" range. So, if your '78 capacity is the same as my '73, you are over full by 1/4 quart or so.

DC
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Old Jun 8, 2013 | 08:30 PM
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If more than 1/2 quart over, you need to drain some out. The easiest way to do that is to buy 10 feet of 1/4" clear plastic tubing, stick one end down the dipstick tube into the sump, suck on the other end until you see oil about to hit your mount, then stick that end into a milk jug sitting on the ground. It will syphon out about 1/2 quart in a few minutes. You can even pre-mark a line on the jug where you have removed the amount you want.

No need to mess with the oil pan.

If you have a 'squeeze pump' syphon tube, it's even easier.

{You put all 5 quarts in, didn't you??}

Last edited by 7T1vette; Jun 8, 2013 at 08:32 PM.
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Old Jun 8, 2013 | 08:30 PM
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The oil capacity of the Chevy 350 ci engine has always been 4 qts w/out filter, 5 w/filter......unless your oil pan is non-stock. If you took it to a jiffy lube type place what type of filter did they install....if undersized that might account for the over fill condition or if your dip stick was ever replaced that could be the reason.

An oil change is one of the easiest maintenance items you can do yourself. Get a good quality floor jack and your in business.
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Old Jun 8, 2013 | 09:28 PM
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Originally Posted by gq82
The oil capacity of the Chevy 350 ci engine has always been 4 qts w/out filter, 5 w/filter......unless your oil pan is non-stock. If you took it to a jiffy lube type place what type of filter did they install....if undersized that might account for the over fill condition or if your dip stick was ever replaced that could be the reason.

An oil change is one of the easiest maintenance items you can do yourself. Get a good quality floor jack and your in business.
OK, we are metric in Canada. I use a large NAPA filter Gold #1061 filter. Five liters is a bit more than five US quarts. It will overfill on the dipstick by about 1/8". Has done so for 20 years. If you are using the new Delco PF-25 substitute (I think a 454) you may experience a true overfill. The 454 is very small.
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Old Jun 8, 2013 | 09:57 PM
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An optional engine oil filter is the NAPA 1794. It has enough filter area so that the pressure drop across it is so low, it will most likely never go into bypass mode, even on cold morning startups with thick oil. You will be filtering 100% of the oil, 100% of the time. Chevrolet origionally put them on the medium duty trucks, C60 and such.
Pour a quart and a half of oil into the filter before you install it. First stop of the oil, on a small block Chevy, when it leaves the oil pump, is the filter. Pre-filling the filter minimizes the amount of time the engine runs with zero oil pressure.
Most people don't bother prefilling the filter, but we ARE fanatics, aren't we?

Last edited by gcusmano74; Jun 8, 2013 at 10:03 PM.
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Old Jun 8, 2013 | 10:14 PM
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Originally Posted by paul 74
I use a large NAPA filter Gold #1061 filter. Five liters is a bit more than five US quarts.
I keep forgetting about this filter and I need to start using it. It's a little larger than the standard Napa 1069 so should allow me to use a full 5 quarts. It's about the same price too.

Originally Posted by gcusmano74
An optional engine oil filter is the NAPA 1794.
This is another filter worthy of consideration but it's about twice the price of the 1061.

DC
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Old Jun 9, 2013 | 10:31 AM
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If you had a child, would you feed it generic or low quality food just to save money? Why do that with your car? You probably spend more than that difference on specialty coffees in one month....
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Old Jun 9, 2013 | 10:43 AM
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Originally Posted by razman
i'm not sure i've ever heard of anyone on this forum say that they took their car somewhere to have the oil changed......
No one but myself is changing the oil in my "81"
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Old Jun 9, 2013 | 12:32 PM
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Originally Posted by razman
i'm not sure i've ever heard of anyone on this forum say that they took their car somewhere to have the oil changed......
I have taken my car for oil changes for 228K miles. Never a problem. A good shop. They like the car. Everytime I bring it in, they remember the last time I was there.
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