Oil Pressure

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Dec 15, 2012 | 03:13 AM

#16

CrawlerXJ

Senior Member

Joined: Aug 2010

Posts: 893

Likes: 0

Model: Cherokee

Nice to see some experienced guys come in. Take their advice, its not normal.

Dec 15, 2012 | 08:19 AM

#17

ExTrEmExJ99

Seasoned Member

Joined: Oct 2012

Posts: 277

Likes: 0

From: 3 hrs NW of Moab

Year: 1999

Model: Cherokee

Engine: Big 4.0L

could the relief spring in the oil pump be bad or sticking? I would run a engine flush through it before your next oil change buy a mopar or wix oil filter and some good 10w30 oil and maybe a little lucas and see where that gets you.

Dec 15, 2012 | 09:16 AM

#18

cruiser54

::CF Moderator::

Joined: Aug 2011

Posts: 43,971

Likes: 1,579

From: Prescott, Az

Year: 1990

Model: Cherokee (XJ)

Engine: 4.0

Quote:

Originally Posted by ExTrEmExJ99

Read this before you recommend Lucas:

http://web.archive.org/web/201009261...ucas/lucas.htm

Dec 16, 2012 | 08:46 AM

#19

CrawlerXJ

Senior Member

Joined: Aug 2010

Posts: 893

Likes: 0

Model: Cherokee

Quote:

Originally Posted by cruiser54

Read this before you recommend Lucas:

http://web.archive.org/web/201009261...ucas/lucas.htm

Nice link. Thanks

Dec 16, 2012 | 09:31 AM

#20

1991Jeep_Man

CF Veteran

Joined: Oct 2009

Posts: 2,867

Likes: 16

From: Fauquier County, Virginia

Year: 1991

Model: Cherokee

Engine: I-6 4.0 HO

Ever actually done one of those little "hand crank gear" Lucas setups in AZ or whatever? I always noticed it took more effort to turn the handle than the regular oil. Also, all the lucas ever seemed to do was gob ridiculous amounts of oil on the little gears. The standard oil climbed and made all gear surfaces "wet" so to speak. Lucas is a joke IMHO. I used it once... caused my PureOne filter to fail.