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Old 12-07-2010, 01:49 AM
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Question oil overfill concerns? someone please help!

i have a 2006 4x4 grand cherokee 3.7L v6 and the recommended oil change is 5 quarts. i had a friend do mine and he forgot at the time how many quarts to add. so we just about finished all of the 6 bottles, with a little left in the last bottle. I bought (castro full synthetic). when i checked the dipstick its about 1/4 and inch above the "safe" indicator. Will i be fine, and is this type of overfill dangerous for my jeep??? or should i be okay?
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Old 12-07-2010, 02:03 AM
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Re: oil overfill concerns? someone please help!

when i say "6 bottles" i mean 6 quarts..
answers anybody?
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Old 12-07-2010, 02:09 AM
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Re: oil overfill concerns? someone please help!

did you start the jeep before checking? consider the fact that you have a dry oil filter... if you havent started it yet i promise it will drop down inbetween the marks.
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Old 12-07-2010, 02:53 AM
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Re: oil overfill concerns? someone please help!

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Originally Posted by 2005JGC View Post
did you start the jeep before checking? consider the fact that you have a dry oil filter... if you havent started it yet i promise it will drop down inbetween the marks.
yeah Ive driven it for a full day and probably a good 100 miles by now.
from what ive researched its 4.5/6 quarts and 5 quarts with a dry oil filter. Any suggestions? i just dont know if its bad or not to slightly overfill (1/4 inch over the safe indicator)
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Old 12-07-2010, 04:09 AM
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Re: oil overfill concerns? someone please help!

personally I would say your fine, Ive seen cars function with ALOT more and I have also seen them function with ALOT less... Im no engineer but for the 3k miles of your oil change I would not worry about it (personally).

btw this is also my personal opinion, I saw you said synthetic and alot of people whom run synthetic think that they have the ability to extend their oil changes... no matter what you use you should never go beyond the manufacturers specified time. Not that you do I am just making a blanket statement.
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Old 12-07-2010, 07:23 AM
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Jmo.....but I would drain the oil and put 5 qts back in.

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Old 12-07-2010, 07:23 PM
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Re: oil overfill concerns? someone please help!

yeah i think im just considering redoing it, not really willing to be a test bunny. but thanks you guys! i needed that second opinion
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Old 12-08-2010, 12:59 AM
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Re: oil overfill concerns? someone please help!

i wouldnt redo every thing just "slowly" open the drain plug till so have a little steam flowing and empty about half a quart
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Old 12-08-2010, 03:54 AM
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Thumbs up Re: oil overfill concerns? someone please help!

Quote:
Originally Posted by jdcollins86 View Post
i wouldnt redo every thing just "slowly" open the drain plug till so have a little steam flowing and empty about half a quart
yeah i wasn't really interested on spending another 30 bucks in oil, so i took it to the local oil-stop and they had a pump for this sorta thing. sucked a half quart right out of the dipstick tube
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Old 12-08-2010, 05:20 PM
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Re: oil overfill concerns? someone please help!

It would have been fine left slightly over full.

The only issue with excessive overfilling is the crankshaft dipping into the oil, causing oil airation. Quarter inch over full would not get the oil anywhere near the crank. Remember, the sumps on these are designed for wheeling, and the oil moves around a LOT during off road adventures and even whilst on road.

When circuit racing normal sumped road cars, we ALWAYS over-full the sump by around a quart to alleviate oil surge during hard cornering. NO crankshaft is THAT close to the upper oil level

Glad you sorted it though
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Old 12-09-2010, 06:33 AM
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Talking Re: oil overfill concerns? someone please help!

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Originally Posted by Marlin View Post
It would have been fine left slightly over full.

The only issue with excessive overfilling is the crankshaft dipping into the oil, causing oil airation. Quarter inch over full would not get the oil anywhere near the crank. Remember, the sumps on these are designed for wheeling, and the oil moves around a LOT during off road adventures and even whilst on road.

When circuit racing normal sumped road cars, we ALWAYS over-full the sump by around a quart to alleviate oil surge during hard cornering. NO crankshaft is THAT close to the upper oil level

Glad you sorted it though
wow that made a lot of since, especially with everything i researched. thanks man! just wish i woulda knew that before haha
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