Changing coolant on 2006 XK - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 4 (permalink) Old 11-18-2010, 08:13 PM Thread Starter
RKL
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Changing coolant on 2006 XK

Time to replace coolant..Can I just drain the radiator and recovery tank and refill like my wrangler without removing the air bleader bolt near the water pump? I know I will have to drive and burb it a number of times but that is OK...eventually will all the air come out?...thanks RKL
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post #2 of 4 (permalink) Old 11-18-2010, 09:37 PM
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Draining the radiator and recovery tank will get most of the coolant, but there will still be a lot left in the heater core and water jackets in the engine block.

I haven't done it on my Commander, but I have done it many times in other vehicles. Just pulling the lower radiator hose away from the radiator can release a lot of trapped fluid. Pulling one heater hose and blowing in it will get a lot of the heater core coolant to drain, works even better if you have compressed air. Pulling the plug in the block at the bottom of the water jacket will get the last of the trapped coolant. Some of the newer engine have better designs that don't trap any coolant in the water jackets, if thats the case, there won't be drain plugs at the base of the block.

Zerex G-05 is the aftermarket equivalent of the Chrysler HOAT fluid. Do NOT use the Prestone All Makes, All Models, mixes with all colors anti-freeze. Its a derivative of DexCool, its been out there for a couple of years now, I'm surprised we haven't been hearing horror stories about it.
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post #3 of 4 (permalink) Old 12-04-2010, 03:24 PM
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How does the drain on these radiators work?

Mine turns 90 degrees and stops, but no fluid comes out. I believe after i rotate it 90 degrees im supposed to pull on it... but i dont want to break it.

Just looking for confirmation; i'd hate to break it and need a new rad

-Matt
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post #4 of 4 (permalink) Old 12-04-2010, 03:57 PM
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nevermind....

i'm doing a change on my 08 liberty which i thought had the same type of drain as the commander. i think the commander is different.

I'm just going to pull the lower hose. A bit messier.... but not a big deal.

-Matt
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