When i changed my oil, only 5 quarts came out. - Jeep Wrangler Forum
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Old 02-18-2016, 08:43 PM
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When i changed my oil, only 5 quarts came out.

Just did my Jeeps 2nd oil change and the first time it was 6 quarts in 6 quarts out, but this time It only drained 5 quarts and still took all 6 quarts. Is this normal oil use? Has anyone had the same experience? Thanks.

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Old 02-18-2016, 11:31 PM   #2
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Likely someone siphoned some of your oil out of the crank case. This is quite common, especially when you use Royal Purple oil. The thieves can smell the extra lubricity of the oil and will strike. It's usually a neighbor, the one you don't like, the one who has the barking dog that looks on your lawn.

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Old 02-19-2016, 12:03 AM   #3
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Did you change it right after shutting it off? Did you change the filter while the drain plug was out? If you just got done running the engine then pulled the drain plug there's still some oil in the top of the motor. I don't think our filter housings hold a full quart but that could contribute as well.
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Old 02-19-2016, 08:10 AM   #4
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Did you check the dipstick recently pre oil change? If so, what was the level?
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Old 02-19-2016, 08:45 AM
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It was sitting for a few hours before I changed the oil, and I did change the filter while the drain plug was out. I didn't check the dipstick right before the oil change but I check fairly regularly, like every few weeks, and it's never been low. I've read that new engines will use a little oil but this is the first new engine I've ever owned and I thought a whole quart sounded a little excessive.
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Old 02-19-2016, 08:47 AM
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And Meta, how did you know I used Royal Purple?
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Old 02-19-2016, 08:53 AM   #7
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I've done mine 3 times. First after 1,700 miles and second after 3k miles. Those both were 6 in and 6 out. The third I ran all the way up to 5k and over the course of the whole summer (not my DD). Only got 5 out...can't find any leaks anywhere.
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Old 02-19-2016, 09:00 AM   #8
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Get your flashlight out and have a look to see if there is oil in the valley below the intake by your oil filter housing.
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Old 02-19-2016, 09:10 AM   #9
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And Meta, how did you know I used Royal Purple?
I'm your neighbor.
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Old 02-19-2016, 10:28 AM
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I'm your neighbor.
that still doesn't explain how you know what kind of oil I used, since I changed it in the garage.
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Old 02-19-2016, 10:31 AM
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Originally Posted by grizzstang View Post
Get your flashlight out and have a look to see if there is oil in the valley below the intake by your oil filter housing.
just checked, no signs of oil leaking from the filter housing.
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Old 02-19-2016, 10:58 AM   #12
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You need to booby trap your garage for that pesky oil thieving neighbor. In all seriousness I don't know what else it could be...did you put in 5w20 or 5w30? Idk where you are located or if it gets really cold but maybe that is a factor?
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Old 02-19-2016, 11:03 AM
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You need to booby trap your garage for that pesky oil thieving neighbor. In all seriousness I don't know what else it could be...did you put in 5w20 or 5w30? Idk where you are located or if it gets really cold but maybe that is a factor?
It's 5W20 like it recommends, also it gets very cold here in North Dakota, but how would that effect it?
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Old 02-19-2016, 11:15 AM   #14
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Likely someone siphoned some of your oil out of the crank case. This is quite common, especially when you use Royal Purple oil. The thieves can smell the extra lubricity of the oil and will strike. It's usually a neighbor, the one you don't like, the one who has the barking dog that looks on your lawn.
Well played
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Old 02-19-2016, 11:26 AM   #15
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I'm just brainstorming. I would chalk it up to a new engine breaking in.
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Old 02-19-2016, 11:34 AM
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I'm just brainstorming. I would chalk it up to a new engine breaking in.
that's what I figured too. Just checking to see what everyone else thinks.
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Old 02-19-2016, 11:57 AM   #17
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that's what I figured too. Just checking to see what everyone else thinks.
It is probably break-in use. I saw you did a second oil change and assumed you were past that stage. If you changed early and have no leaks anywhere that would be my guess too. Mine used about a half quart during break in, then nothing since. I don't measure what I drain though I just see that it stays full on the dipstick when I check it.
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Old 02-19-2016, 12:55 PM   #18
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This thread has got me wondering what kind of dog Meta has
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Old 02-19-2016, 12:58 PM   #19
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lol too funny. Meta got him hook line and sinker
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Old 02-19-2016, 01:51 PM   #20
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This thread has got me wondering what kind of dog Meta has
My dog:
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Old 02-21-2016, 03:06 PM   #21
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i'm your neighbor.
lmao
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Old 02-21-2016, 06:02 PM   #22
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First off you'll never get all the oil out, some will always remain behind, usually not enough to impact the dipstick reading if it drains long enough. The longer you let it drain the more will come out, to a point. I let mine drain an hour, a quick lube place will probably only allow about 5 minutes drain time, guess who gets more oil out. Finally did you confirm the engine was full of oil just before draining it? I always put 6 quarts of oil in and that puts me to the full mark on the dipstick, so whatever residual oil that remains isn't enough to impact the dipstick reading.

If you got 5 quarts out I wouldn't lose sleep over it. I would however keep an eye on the oil level. It's not uncommon to use some oil, especially for the first 10K miles or so, or when switching brands of oil.
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Old 02-21-2016, 06:08 PM   #23
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I'm your neighbor.
I think we have an issue here
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Old 02-21-2016, 07:01 PM   #24
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Just did my Jeeps 2nd oil change and the first time it was 6 quarts in 6 quarts out, but this time It only drained 5 quarts and still took all 6 quarts. Is this normal oil use? Has anyone had the same experience? Thanks.
Part of the missing quart is soaked up in the oil filter. Also, it may have been a bit low, which would account for the rest.
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Old 02-23-2016, 06:58 PM   #25
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The OEMs (all of them) are using lower and lower tensile strength Piston rings. These lighter rings help with fuel economy ( less drag). The downfall of these rings are that carbon builds up in the ring land area and the rings stop functioning correctly....blow by incurs and you lose oil. Also, lower grade oils evaporate at a higher rate and this contributes to oil consumption.

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