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Old 08-11-2009, 11:30 PM   #1
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new to forum coolant ????

Back in a jeep, but this time a wrangler and not a cj I looked at the coolant tonight and it is an old orange color with grit on the inside of the cap....It appears I probably need to change it. Does the tj have a plug on the block that has to be removed due to pressures, grand cherokee has somethin like that, or can I just flush and change like in the old days. Manual call for HOAT, what is a replacement as there is not a dealership here....does this mean a roadtrip to a dealership to purchase what they reccomend. thanks for the help.

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Old 08-12-2009, 02:06 AM   #2
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The drain for the radiator will be on the passenger side bottom of the radiator.

Nothing special just grab 2 gallons of the 50/50 mix that goes best in the area you live in.

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Old 08-12-2009, 12:43 PM   #3
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check for any leaks, just in case. sometimes if you're getting air into the system, it will cause the orange coloring (with grit). this could be a problem especially if you have one of the infamous "plastic" radiators. over time, that grit will settle in parts of your engine and is a huge pain to flush out.
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Old 08-12-2009, 01:46 PM   #4
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If it's orange, stick with orange. If you mix green or other colors of coolants you will get that grit - even a small amount will cause it. That grit will plug up your heater and your radiator. And, it can promote corrosion rather than inhibit it.

If you want to switch coolants, you must completely flush out the system - including the heater core.
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