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Old 05-04-2015, 06:14 AM
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Pressure leak down pill placed in coolant ex factory

Recently started a thread Brown sludge in coolant bottle.
Well after several hours and time with Service mgr and Dealer Principal they opened a case on my behalf and soon after the mechanic had finished his diagnostics, Jeep got back to the dealership. They told me a pill had been placed in the coolant at the factory. Then restated as a pressure leak down pill had been placed in coolant at the factory. Neither the Service mgr or Dealer Principal were sure of what that meant or was for.

I have done some net searching and cannot find any reasonable results, everything comes up as pills for vehicles to stop coolant leaks or makes reference to PILL which I think has something to do with fuel jetting?

Anyway, hoping some of you Jeep factory folk or mechanics would be able to enlighten me.

Dealer is flushing system and putting in new coolant tomorrow.
Special attention to what comes out.

Service mgr said he'd seen the sludge in one other coolant bottle and they ended up replacing the core. Radiator core I suppose he referred to.

Would love to know why Chrysler would do this to a new engine and what damage it has/may have done to my vehicle.

Cheers

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Old 05-04-2015, 07:26 PM
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Re: Pressure leak down pill placed in coolant ex factory

The only reference I can find to any sort of pill other than plugging leaks, is this.....................

Mercedes is an easy-to-understand example of why you shouldn’t change types of extended-life coolants. Mercedes’ coolant jug contains a silica gel bag (yes, something similar to the packets designed to absorb moisture in camera cases, etc.). However, with a coolant containing silicate inhibitors, the silica gel helps maintain a stable level of silicate protection over the years. Mercedes has long used the silica gel bag, and the protection level is supported by field experience. The packet is built into the jug and is a life-of-the-car item.

NOTE MB was back in 2005 using a HOAT with this silica gel pack.

Benn in touch with Ser Mgr this morning and asked for written info from Jeep Australia or Chrysler on there explanation of a Pressure Leak Down Pill, what is its purpose, how long does it last, is it only some random test vehicles or did everyone get a Pill? Whats the likelyhood of long term damage as one client in Oz had a oil cooling core replaced as at the time Dealer did not know what was causing it.

So hopefully today we will learn more about the 'Secret Mens Business' that goes on with Chrysler/Jeep.

Cheers.
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Old 05-05-2015, 06:02 PM
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Re: Pressure leak down pill placed in coolant ex factory

Nothing further from Jeep Australia yet.
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Old 05-07-2015, 07:03 PM
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Re: Pressure leak down pill placed in coolant ex factory

Just reviewed my build sheet and there is mention of 3.2 extra gallons of Diesel but no reference to fluids placed in vehicle at factory.

So how would we know what COOLANT was placed in the vehicle.

Mine is PINKish not PURPLE.

Been in touch with a Coolant Testing Laboratory. One of the testers there is a mechanic by trade and discussing the tests to be done on my samples and explained Jeep Australia's explaination of the elusive PILL for a Coolant Pressure Leak Down Test and he said he'd never heard of that either.

Anyone give any advice on how we can investigate this further?

We have 3 vehicles in Aus who have all presented at the same dealer for
Sludge in Coolant Bottle issues.

So I am having the PINK Coolant and PURPLE Coolant samples tested for comparison and they can check it against data sheets. They can also make a determination as to HOAT or OAT based on the chemical chromatography analysis with this info at hand.

I have a sample of the sludge and it will also be looked at to try and determine what it is.

ORANGE PINK or PURPLE be alert because mixing of HOAT and OAT's will cause problems with cooling system and engine life.
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Old 05-08-2015, 12:50 PM
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Re: Pressure leak down pill placed in coolant ex factory

The pill they're referring to is this highly sophisticated technology breakthrough of crushed walnut shells and ginger root, which dissolves in the cooling system and inserts itself into cracks, and crevices where coolant is trying to escape. That is the composition of the typical brown leak pills used by manufactures etc. It actually works well.

The only other time I've seen a build up of sludge was with Redline Water Wetter, which used an old idea of silicone as a de-foaming additive, foam doesn't transfer heat, less foam better heat transfer. The silicone changes to brown to black depending on how hot it becomes.

Good Luck
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Old 05-12-2015, 08:14 AM
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Re: Pressure leak down pill placed in coolant ex factory

Quote:
Originally Posted by C175 View Post
The pill they're referring to is this highly sophisticated technology breakthrough of crushed walnut shells and ginger root, which dissolves in the cooling system and inserts itself into cracks, and crevices where coolant is trying to escape. That is the composition of the typical brown leak pills used by manufactures etc. It actually works well.

The only other time I've seen a build up of sludge was with Redline Water Wetter, which used an old idea of silicone as a de-foaming additive, foam doesn't transfer heat, less foam better heat transfer. The silicone changes to brown to black depending on how hot it becomes.

Good Luck
Appreciate your post.

Ive been sitting on this for a little bit. Have not had my sample tested yet but intend to.

Here is a detailed summary of my last week of research. I have a 20 page word doc with a lot of history across several Chrysler products but here is the summary.

Thanks again.

Brown sludge scum in coolant bottle.
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Old 05-20-2015, 09:42 AM
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Re: Pressure leak down pill placed in coolant ex factory

On my Subaru I had a blackish buildup on the plastic bottle and it was caused by a blown head gasket and the engine combustion gasses entering the coolant. Minor leak that would only occur under heavy loads. Eventually I started noticing bubbles and coolant level rise after a hard run. Then it finally failed altogether. Dealer can perform a simple test on the radiator to test for combustion by products. Just a thought.


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