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Old 09-14-2013, 09:59 AM   #1
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engine oil overfill

My wife's (6 cylinder) Jeep came back from the shop half a quart over filled.

How big a problem? Take it back and make them drain some?

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Old 09-14-2013, 10:35 AM   #2
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You will be fine at 1/2 qt.

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Old 09-14-2013, 10:54 AM   #3
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Thanks. I always heard over was worse than under so I was a little concerned.

It pisses me off when a "legitimate" shop can't perform the most basic of all maintenance procedures without f-ing it up. I could train a half blind orangutan with a learning disability to do oil changes in a single afternoon.
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Old 09-14-2013, 11:17 AM   #4
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Engines are designed to run ok with +/- 1 qt, so you should have nothing to worry about.
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Old 09-14-2013, 11:23 AM   #5
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Excellent, thank you!
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Old 09-14-2013, 11:29 AM   #6
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Take it back to the shop and have them drain out the extra oil to the correct level. You paid for a job to be done correctly and they didn't do it correctly, obviously they didn't even bother to check your oil level when they where done changing the oil....I wonder how many other things they neglected to do? If they rotated your tires you might want to check the lugs before you drive it!

BTW Running an engine over full on oil is very bad for the engine not only does it increase internal oil drag decreasing efficiency and fuel mileage it also aerates the oil. Aerated oil does not lubricate as well as non-aerated oil and it will damage an engine.
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Old 09-14-2013, 11:32 AM   #7
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Quote:
Originally Posted by bunkerboy View Post
My wife's (6 cylinder) Jeep came back from the shop half a quart over filled.

How big a problem? Take it back and make them drain some?
1/2 qt over is no biggy. They say it helps with cavitation. Anything over a quart over and the crank starts dipping into the oil and creates drag
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Old 09-14-2013, 03:06 PM   #8
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To the OP, how are you determining 1/2 qt? The dip stick is not incremented in fluid amounts.
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Old 09-14-2013, 03:15 PM   #9
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Educated guess. The oil level is 1/2 the width of the acceptable range above the acceptable range ... if that makes sense?
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Old 09-14-2013, 04:11 PM   #10
Knows a couple things...

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Quote:
Originally Posted by flflash View Post
BTW Running an engine over full on oil is very bad for the engine not only does it increase internal oil drag decreasing efficiency and fuel mileage it also aerates the oil. Aerated oil does not lubricate as well as non-aerated oil and it will damage an engine.
Come on, as already said above a half-quart extra is a non-factor and won't cause any of those worst-case scenarios you're trying to scare him with. The sky is not falling.
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Old 09-14-2013, 10:25 PM   #11
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Agree 1/2 qt -no big deal. And agree about some places screwing things up. Makes you trust no one. I refuse to rely on someone I don't know personally to do anything.That is why I do it myself (and I am old with Parkinsons to boot). BTW What oil are they putting in there? (what they say-may not be what you get). Example. A friend of mine at work always has his oil changed at spiff-o-lube place, (says he is too busy to do himself). Has had to replace (3) oil filter housings ($100/per housing) replaced-and Spiff-o-lube says not their problem. you would think he would learn (finally did). He also has had to replace (2) catylic converters-coincidence? Now that he is back to doing it himself with the CORRECT oil no problems in the last (2 or 3 yrs).

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