LOST JEEPS :: View topic - '02 KJ heater core replacement

papaindigo wrote:

1. for all vehicles use what the owner's manual recommends and that does not include "universal" antifreeze.

One caveat is the Amsoil universal coolant. I personally run the Amsoil Coolant in my Ram Cummins, Jeep XJ, and Jeep KJ.

"Compatible With Other Fluids
AMSOIL Antifreeze & Engine Coolant is dyed neutral yellow and is compatible with all ethylene and propylene antifreeze and coolant formulations on the market, including DEX-COOL®, Sierra® and Zerex®. It is also compatible with fully formulated diesel antifreezes and other organic acid technology (OAT) and hybrid organic acid technology (HOAT) formulations.

Helps Prevent Metallic Corrosion
Independent tests reveal AMSOIL Antifreeze & Engine Coolant surpassed standards for metallic corrosion. It plates metal to protect even when exposed to acids and salt spray. Standard allowances for loss in aluminum and solder are less than 60 mg. AMSOIL Antifreeze & Engine Coolant lost 0 mg in aluminum and less than 6 mg in solder.

Standards for iron, steel, copper and brass allow a maximum loss of less than 20 mg. AMSOIL Antifreeze & Engine Coolant never exceeded a 3 mg loss in any of those metals in a testing period that was run for 10 weeks, three weeks longer than required tests.

AMSOIL Antifreeze & Engine Coolant (ANT)
•Formulated for heavy-duty and automotive applications
•Good for motorcycles, ATVs, snowmobiles and some marine applications
•Extended drain intervals ◦Up to seven years or 750,000 miles in over-the-road diesel trucks
◦Up to seven years or 250,000 miles in passenger cars, light-duty trucks, vans and recreational vehicles

•Biodegradable, low toxicity, non-polluting
•Aluminum engine block compatible
•Contains no nitrates, nitrites, phosphates, silicates, borates, amines or molybdates
•Dispose of used antifreeze according to local, state and federal regulations

Helps Stop Leaks
AMSOIL Antifreeze & Engine Coolant adheres to metal. It self-seals hairline cracks in welds and seams to help prevent leaks, without additional stop-leak products or fibrous materials.

APPLICATIONS

AMSOIL Antifreeze & Engine Coolant can be used in any applications requiring the following specifications or tests:
•ASTM D 6210, D 3306
•Caterpillar EC-1
•Chrysler MS-7170, MS-9769
•Cummins CES 14603
•Detroit Diesel 93K217
•Ford WSS-M97B51-A1, WSS-M97B44-D
•Freightliner 48-22880
•GM DEX-COOL®
•John Deere 8650-5
•Mack Trucks CN H
•TMC RP-330
•US Military CID A-A-52624-A"

Author:	-XR- [ Mon Oct 14, 2013 9:44 pm ]
Post subject:	'02 KJ heater core replacement
Anyone replaced the heater core on an '02 KJ? The manual says I need to remove the HVAC housing and that requires draining the A/C system. My A/C still works very well and cash is a little short. Is it necessary for a heater core replacement? Or is there a work around?

Author:	tjkj2002 [ Mon Oct 14, 2013 10:10 pm ]
Post subject:	Re: '02 KJ heater core replacement
Yep no way around the AC system must be evac'd to change out the heater core after the entire dash is removed 1st. Just take it to a shop that does AC work,have them evac the system and then when you get the heater core changed take it back and have it recharged.We do it all the time at my shop.

Author:	-XR- [ Mon Oct 14, 2013 10:14 pm ]
Post subject:	Re: '02 KJ heater core replacement
How many hours for the whole job?

Author:	tjkj2002 [ Mon Oct 14, 2013 10:16 pm ]
Post subject:	Re: '02 KJ heater core replacement
-XR- wrote: How many hours for the whole job? Book time calls for about 7.5 hours plus 1 hour for the AC evac/recharge.For someone that has not done this before expect a whole day if not a whole weekend.

Author:	-XR- [ Mon Oct 14, 2013 10:24 pm ]
Post subject:	Re: '02 KJ heater core replacement
darn that sucks. I just replaced the radiator,hoses,water pump and belt 2 weeks ago.

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'02 KJ heater core replacement http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=1&t=77051	Page 1 of 1

Author:	joejeeper420 [ Fri Nov 22, 2013 3:10 am ]
Post subject:	Re: '02 KJ heater core replacement
viewtopic.php?t=72219

Author:	dieselenthusiast [ Fri Nov 22, 2013 9:39 am ]
Post subject:	Re: '02 KJ heater core replacement
-XR-, out of curiosity, did you buy the Jeep new? If so, how many times did the coolant get changed?

Author:	-XR- [ Tue Nov 26, 2013 7:39 pm ]
Post subject:	Re: '02 KJ heater core replacement
Original owner,186K and 3 times. First 2 were Jeep coolant,last one was regular green stuff. I have to admit this summer I put off replacing the radiator and just kept pouring H2O into the system as it needed it. I'm sure that's why I need a core. It's bypassed right now and boy do I miss the heater. Surprising 'cause I ride a motorcycle year round.

Author:	dieselenthusiast [ Wed Nov 27, 2013 12:01 am ]
Post subject:	Re: '02 KJ heater core replacement
-XR- wrote: Original owner,186K and 3 times. First 2 were Jeep coolant,last one was regular green stuff. I have to admit this summer I put off replacing the radiator and just kept pouring H2O into the system as it needed it. I'm sure that's why I need a core. It's bypassed right now and boy do I miss the heater. Surprising 'cause I ride a motorcycle year round. Thanks for the info. There's not enough evidence to conclude that water (lack of coolant which helps prevent metallic corrosion) was the culprit, especially with the mileage that you have on yours, but, there's not enough evidence to say that it wasn't the culprit. Hope you get it fixed though!

Author:	tommudd [ Wed Nov 27, 2013 1:26 am ]
Post subject:	Re: '02 KJ heater core replacement
regular green stuff= killer of the system

Author:	-XR- [ Thu Nov 28, 2013 4:25 pm ]
Post subject:	Re: '02 KJ heater core replacement
tommudd wrote: regular green stuff= killer of the system Care to elaborate?

Author:	tjkj2002 [ Thu Nov 28, 2013 4:38 pm ]
Post subject:	Re: '02 KJ heater core replacement
-XR- wrote: tommudd wrote: regular green stuff= killer of the system Care to elaborate? What is called the "regular green stuff" these days is OAT coolant,aka Dexcool.It's almost impossible to find actual Ethylene Glycol these days which is compatible with the correct HOAT coolant that is required in your cooling system. Coolant color these days means nothing,just what the seller wants for a color is all as has no bearing on the actual chemical makeup to tell the 3 main coolants apart.

Author:	papaindigo [ Sat Nov 30, 2013 10:14 am ]
Post subject:	Re: '02 KJ heater core replacement
Short version: 1. for all vehicles use what the owner's manual recommends and that does not include "universal" antifreeze or antifreeze that happens to be the same color as what you have or what the parts store counter clerk says, with confidence but little knowledge, will do just fine. Worst thing you can do is mix different antifreeze chemistry, not to be confused with brands. Whether or not you can completely flush a system and change antifreeze chemistry from manufacture recommended to another I have no clue although you can do a full flush to return to what the manufacture recommends. Failure to follow manufacture recommendations can result in a) corrosion, b) jelling or precipitation of particulate matter, or c) if really lucky nothing. 2. HOAT coolant is what DCJ and others recommend for certain vehicles and model years including 02 KJs. 3. HOAT can sometimes be slightly hard to find but options include Zerex G-05 (NAPA, Amazon, other parts stores that if not in stock can get it - when pricing be sure to note whether you are getting 50/50 premix or 100%), Mopar HOAT, Motorcraft (Ford) Premium Gold (see 50/50 comment), and maybe Mercedes Part # Q 103 0002 although I'd bet a bit pricey. 4. to fill system see my post at viewtopic.php?f=5&t=74917&p=785507&hilit=flush#p785507 For details on pulling the heater core on an 02 you can get a copy of the FSM from the link on Sir Sam's NOOB guide.

Author:	dieselenthusiast [ Sat Nov 30, 2013 11:10 am ]
Post subject:	Re: '02 KJ heater core replacement
papaindigo wrote: 1. for all vehicles use what the owner's manual recommends and that does not include "universal" antifreeze. One caveat is the Amsoil universal coolant. I personally run the Amsoil Coolant in my Ram Cummins, Jeep XJ, and Jeep KJ. "Compatible With Other Fluids AMSOIL Antifreeze & Engine Coolant is dyed neutral yellow and is compatible with all ethylene and propylene antifreeze and coolant formulations on the market, including DEX-COOL®, Sierra® and Zerex®. It is also compatible with fully formulated diesel antifreezes and other organic acid technology (OAT) and hybrid organic acid technology (HOAT) formulations. Helps Prevent Metallic Corrosion Independent tests reveal AMSOIL Antifreeze & Engine Coolant surpassed standards for metallic corrosion. It plates metal to protect even when exposed to acids and salt spray. Standard allowances for loss in aluminum and solder are less than 60 mg. AMSOIL Antifreeze & Engine Coolant lost 0 mg in aluminum and less than 6 mg in solder. Standards for iron, steel, copper and brass allow a maximum loss of less than 20 mg. AMSOIL Antifreeze & Engine Coolant never exceeded a 3 mg loss in any of those metals in a testing period that was run for 10 weeks, three weeks longer than required tests. AMSOIL Antifreeze & Engine Coolant (ANT) •Formulated for heavy-duty and automotive applications •Good for motorcycles, ATVs, snowmobiles and some marine applications •Extended drain intervals ◦Up to seven years or 750,000 miles in over-the-road diesel trucks ◦Up to seven years or 250,000 miles in passenger cars, light-duty trucks, vans and recreational vehicles •Biodegradable, low toxicity, non-polluting •Aluminum engine block compatible •Contains no nitrates, nitrites, phosphates, silicates, borates, amines or molybdates •Dispose of used antifreeze according to local, state and federal regulations Helps Stop Leaks AMSOIL Antifreeze & Engine Coolant adheres to metal. It self-seals hairline cracks in welds and seams to help prevent leaks, without additional stop-leak products or fibrous materials. APPLICATIONS AMSOIL Antifreeze & Engine Coolant can be used in any applications requiring the following specifications or tests: •ASTM D 6210, D 3306 •Caterpillar EC-1 •Chrysler MS-7170, MS-9769 •Cummins CES 14603 •Detroit Diesel 93K217 •Ford WSS-M97B51-A1, WSS-M97B44-D •Freightliner 48-22880 •GM DEX-COOL® •John Deere 8650-5 •Mack Trucks CN H •TMC RP-330 •US Military CID A-A-52624-A"

Author:	dieselenthusiast [ Sun Dec 01, 2013 12:19 am ]
Post subject:	Re: '02 KJ heater core replacement
tjkj2002 wrote: NEVER mix Propylene Glycol Antifreeze(which amsoil coolant is) with and Ethylene Glycol based coolant. I agree, it's best to avoid mixing them. The guys who run the Amsoil in their Ram Cummins thoroughly flush the system (repeatedly) until the system is clean before switching to Amsoil. I added the Amsoil to the KJ when I added the Mopar Block Heater. As you can see, it takes a lot to get all the coolant flushed out. A friend of mine on the Cummins forum used over 20 gallons of water to flush. The far left jug is the first drain and the far right is unopened distilled water.

Author:	dieselenthusiast [ Sun Dec 01, 2013 12:36 am ]
Post subject:	Re: '02 KJ heater core replacement
Here's an interesting article. Within the article, here's this quote: "To quote Dr. Paul Fritz, senior coolants technologist for ChevronTexaco Products Co., “Nothing bad will happen” when two brand-name coolants with different corrosion inhibitor technologies are mixed. By this he means that no sludge will form, there will be no damaging chemical reactions and the coolant will still carry heat and protect against freezing." http://www.genosgarage.com/GenosGara...Antifreeze.pdf

Author:	streetglideok [ Sun Dec 01, 2013 8:42 pm ]
Post subject:	Re: '02 KJ heater core replacement
dieselenthusiast wrote: Here's an interesting article. Within the article, here's this quote: "To quote Dr. Paul Fritz, senior coolants technologist for ChevronTexaco Products Co., “Nothing bad will happen” when two brand-name coolants with different corrosion inhibitor technologies are mixed. By this he means that no sludge will form, there will be no damaging chemical reactions and the coolant will still carry heat and protect against freezing." http://www.genosgarage.com/GenosGara...Antifreeze.pdf Problem with guys that hang around in the labs, is they fail to research real world scenarios. There is hypothetical reality, and there is reality. Science is not perfect, and that is why there are still real world tests of things to verify results. I've heard time and time again in the auto industry, when some engineer makes a bold claim, only to be proven wrong later. Take what he says, with a grain of salt.

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Author:	tjkj2002 [ Sat Nov 30, 2013 10:12 pm ]
Post subject:	Re: '02 KJ heater core replacement
dieselenthusiast wrote: papaindigo wrote: 1. for all vehicles use what the owner's manual recommends and that does not include "universal" antifreeze. One caveat is the Amsoil universal coolant. I personally run the Amsoil Coolant in my Ram Cummins, Jeep XJ, and Jeep KJ. "Compatible With Other Fluids AMSOIL Antifreeze & Engine Coolant is dyed neutral yellow and is compatible with all ethylene and propylene antifreeze and coolant formulations on the market, including DEX-COOL®, Sierra® and Zerex®. It is also compatible with fully formulated diesel antifreezes and other organic acid technology (OAT) and hybrid organic acid technology (HOAT) formulations. Helps Prevent Metallic Corrosion Independent tests reveal AMSOIL Antifreeze & Engine Coolant surpassed standards for metallic corrosion. It plates metal to protect even when exposed to acids and salt spray. Standard allowances for loss in aluminum and solder are less than 60 mg. AMSOIL Antifreeze & Engine Coolant lost 0 mg in aluminum and less than 6 mg in solder. Standards for iron, steel, copper and brass allow a maximum loss of less than 20 mg. AMSOIL Antifreeze & Engine Coolant never exceeded a 3 mg loss in any of those metals in a testing period that was run for 10 weeks, three weeks longer than required tests. AMSOIL Antifreeze & Engine Coolant (ANT) •Formulated for heavy-duty and automotive applications •Good for motorcycles, ATVs, snowmobiles and some marine applications •Extended drain intervals ◦Up to seven years or 750,000 miles in over-the-road diesel trucks ◦Up to seven years or 250,000 miles in passenger cars, light-duty trucks, vans and recreational vehicles •Biodegradable, low toxicity, non-polluting •Aluminum engine block compatible •Contains no nitrates, nitrites, phosphates, silicates, borates, amines or molybdates •Dispose of used antifreeze according to local, state and federal regulations Helps Stop Leaks AMSOIL Antifreeze & Engine Coolant adheres to metal. It self-seals hairline cracks in welds and seams to help prevent leaks, without additional stop-leak products or fibrous materials. APPLICATIONS AMSOIL Antifreeze & Engine Coolant can be used in any applications requiring the following specifications or tests: •ASTM D 6210, D 3306 •Caterpillar EC-1 •Chrysler MS-7170, MS-9769 •Cummins CES 14603 •Detroit Diesel 93K217 •Ford WSS-M97B51-A1, WSS-M97B44-D •Freightliner 48-22880 •GM DEX-COOL® •John Deere 8650-5 •Mack Trucks CN H •TMC RP-330 •US Military CID A-A-52624-A" NEVER mix Propylene Glycol Antifreeze(which amsoil coolant is) with and Ethylene Glycol based coolant. I know it does not meet any Ford spec as Ford has a TSB specifically stating never to use any Propylene Glycol Antifreeze in any of there engines as it has been tested by Ford and found to cause damage to the water pump among other things in the cooling system. There is no "universal" coolant,can't happen just like there is no "universal" ATF's.