Hard brown in coolant

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Dec 7, 2014 | 05:27 PM

TuPapi22

Thread Starter

Junior Member

Joined: Nov 2013

Posts: 32

Likes: 0

Model: Cherokee

Hard brown in coolant

Ok so i took off my cap from the radiator and there was this brown rock looking thing it was hard substance such as dirt smashed together what is this?

Dec 7, 2014 | 05:32 PM

XJlimitedx99

CF Veteran

Joined: Jul 2012

Posts: 3,141

Likes: 360

From: Andover, VT

Year: 1999

Model: Cherokee (XJ)

Engine: 4.0 L

Sounds like some kind of stop leak product was used. I would recommend a coolant flush.

Dec 7, 2014 | 05:33 PM

caged

CF Veteran

Joined: Nov 2008

Posts: 7,874

Likes: 100

From: Northern Ontario, Canada

Year: 1990, 1999, 2000

Model: Cherokee

Engine: 4.0

probably rust.
mostly caused from running straight water.

Dec 7, 2014 | 05:35 PM

tjwalker

CF Veteran

Joined: Nov 2010

Posts: 5,841

Likes: 117

From: In the middle of Minnesota!

Year: 1999

Model: Cherokee

Engine: 4.0

1. What year XJ?

2. Do you know the history of routine cooling system maintenance?

3. Any stop leak product ever used?

Dec 7, 2014 | 05:36 PM

djb383

CF Veteran

Joined: Nov 2009

Posts: 8,172

Likes: 17

From: The Republic of TEXAS

Year: 1998

Model: Cherokee

Engine: 4.0L HO

+1, rust.

Dec 7, 2014 | 06:55 PM

bender32

Member

Joined: May 2014

Posts: 111

Likes: 1

From: Kentucky

Year: 2001

Model: Cherokee

Engine: I6

+1 rust......

Post a pic

Dec 7, 2014 | 07:29 PM

Roler

CF Veteran

Joined: Jan 2012

Posts: 3,170

Likes: 312

From: Australia

Year: 1997 (RHD)

Model: Cherokee (XJ)

Engine: 4.0 ltr

Yes, we like photographic evidence of this "hard brown", living in your radiator...

Hard brown in coolant

Hard brown in coolant

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