Blue Devil Radiator stop leak

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Mar 24, 2023 | 03:03 PM

Dkprincess6

Thread Starter

Newbie

Joined: Jan 2020

Posts: 14

Likes: 0

From: Minnesota

Year: 2001

Model: Cherokee (XJ)

Engine: 4.0

Blue Devil Radiator stop leak

Hi!

I have a 2001 XJ with a radiator leak, and we used the Blue Devil sealant in it. I've heard that some people have issues with it after it's been used. Has anyone here ever used it, and what were your results? Thanks!

Mar 24, 2023 | 03:26 PM

Jim Malcolm

Senior Member

Joined: Oct 2020

Posts: 934

Likes: 282

From: PA

Year: 1994

Model: Cherokee (XJ)

Engine: 4.0

Clogging up the heater core is the biggest risk. You should replace the radiator and flush the entire system really, really well, ASAP... Sealant products should only be used in an absolute emergency.

Mar 24, 2023 | 05:05 PM

TrailerTrash

CF Veteran

Joined: Jun 2017

Posts: 2,215

Likes: 635

From: Hangover, PA

Year: 1998

Model: Cherokee(XJ)

Engine: 4.0L

Quote:

Originally Posted by Jim Malcolm

this right here. The radiators are cheap and east to replace.

Mar 24, 2023 | 07:18 PM

exasemech

Senior Member

Joined: Sep 2016

Posts: 971

Likes: 473

From: North East USA

Year: 2000

Model: Cherokee (XJ)

Engine: 4.0

.........a lot easier to replace than the heater core.

Mar 25, 2023 | 03:17 PM

Jeepwalker

Senior Member

Joined: Nov 2010

Posts: 682

Likes: 134

From: Good 'ol WI

Year: 1987

Model: Cherokee

Engine: 4.0

Well, if you already used it ....it's done. Let us know if it fixed the radiator leak.

Eventually you might want to drain/flush the system... use distilled water in the new coolant.