Oil change issues...

kkkustom · **Joined:** Fri Sep 16, 2005 8:33 am **Posts:** 160

I changed my oil today in the jeep, and went to fill it back up, and i noticed under the cap there was some splatters stuck on the bottom which looked like rust? it was only on half the cap too, but i think that it is caused by the D shape of the filler neck on the motor. anyway. it is dried right on there and i could hardly smear it with my finger. There was also a bit of clear "condensation looking" fluid droplets on that area which kinda smelled funny too, almost like gas. some how what ever that doo doo is it was forced back up the filler neck. ohh yeah it is an 05 will 10kmi.

what the hell is that?

sleeve84028 · **Posted:** Mon Jan 09, 2006 7:21 pm

First, that is not rust.

The top of the oil filer neck is a funny place. Assuming that the '05 is setup the same way as my '02: You have 2 things happening to cause the condensation.

1) The Oil filler neck is the highest point in the motor. Most of the oil vapor acumulates here (above the PCV) the vapor is returned to a liquid form of oil on the top of the cap where it turns into a thin film. This vapor can consist of more than just oil. Any water vapor that develops in your oil will also collect here and thus the ugly film.

2) The PCV valve is also right here collecting gases from the crankcase (to be feed back into the intake.) However, not all of the gases are collected and recirculated in the intake track. The problem here is that the PCV is connected lower on the fill tube so not all of the vapor can be collected.

Now, this is my take on it... I don't recall any TSB's or recalls about it so that is my answer and I am sticking to it. BTW: my Liberty has over 40K miles on it now. I have the same crud on the oil cap and haven't had any problems.

Jeepjeepster · **Posted:** Mon Jan 09, 2006 7:33 pm

I dont know if this is good, but i really like the way that stuff smells. They had a recal on the 4.7 in the grand cherokee, dont know what they didnt in the libby.

Its normal.

kkkustom · **Joined:** Fri Sep 16, 2005 8:33 am **Posts:** 160

I wasnt really to worried about it... but thought it was kinda different thats all. I can see exactly what you are saying and it makes sence to me too. thanks.

Cacher123 · **Posted:** Tue Jan 10, 2006 11:02 am

46k on mine, same gunk.

Slightly on topic: Went to my Jeep dlr today for oil/filter (I know, but it's free so I'm not crawlin under) and he has this sign outside "Express Oil Change - No Aptt Needed". Ok, I bought the Jeep there and have lifetime oil/filter. It still takes them over 2 hrs to do the job! :shock:

brpn#1 · **Posted:** Tue Jan 10, 2006 11:56 am

Cacher123 wrote:

46k on mine, same gunk.

Slightly on topic: Went to my Jeep dlr today for oil/filter (I know, but it's free so I'm not crawlin under) and he has this sign outside "Express Oil Change - No Aptt Needed". Ok, I bought the Jeep there and have lifetime oil/filter. It still takes them over 2 hrs to do the job! :shock:

hehe.. thats like how it used to be at chevy dealer w/my old car.. take it there for oil change and checkup b4 vacation.. take all day.. i drop off at 6am.. at 3am i go back there and its sitting in same spot..

i do my own on libby.. easy.. and yes mine has same spots on cap.. 46k miles 04 here

hillcountrykj · **Posted:** Tue Jan 10, 2006 10:30 pm

51K on my 02. It shouldn't get in the motor. thats why there is that thing in side the oil filler neck..I clean mine out after evey oil change.

ManicMechanicJoe · **Posted:** Tue Jan 10, 2006 10:45 pm

43k on mine, same deal, no problems, brpn#1 I love your avatar, did you photoshop or where did you find it?

Guest · **Posted:** Wed Jan 11, 2006 12:16 am

58k on my '02 and same gunk. most of my cars have had the same gunk near the top of the dipstick and other spots, too. ever looked at the bottom of your valve covers?:)

brpn#1 · **Posted:** Wed Jan 11, 2006 7:54 am

ManicMechanicJoe wrote:

43k on mine, same deal, no problems, brpn#1 I love your avatar, did you photoshop or where did you find it?

photoCHOP i did a few days ago..

http://www.lostjeeps.com/forum/phpBB3/vie ... php?t=4783

my original thread with the chopped foto

Oil change issues...

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