How do you flush your radiator??? - Nissan Frontier Forum
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#1 (permalink) Old 08-30-2010, 12:02 PM
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How do you flush your radiator???

Hi all quick question, I wondering how do you go about flushing your radiator? What is needed? The steps if anyone can give me some input or steps on how to do this I would greatly appreciate it. I checked in the stickys section but did find anything. Also just want to make sure I do it right

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#2 (permalink) Old 08-30-2010, 12:09 PM
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1st gen or 2nd gen? They are a little bit different.

07 SE CC Auto
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#3 (permalink) Old 08-30-2010, 02:56 PM
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this would be the 2nd gen its a 2006 CC, just want to know as I will being this by the weekend coming up. I was going to do it last weekend but I figured I'd ask before do it.
any info would be great thanks.
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#4 (permalink) Old 08-30-2010, 03:16 PM
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there is a plastic phillips head screw on the bottom of the radiator that you can drain it by i think on the passenger side , its been a while since i worked on a stock truck but im sure you will need to remove the skid to get to it

then i just use the 50/50 mix from the parts store to fill it back up
edit: to flush id just drain it re-fill turn the truck on for about 2 minutes shut it down, then drain it again until the fluid comes out clean then re-fill

02 sas'd 1st gen
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02 chevy reg cab with 8.1

Last edited by penski61; 08-30-2010 at 03:19 PM.
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#5 (permalink) Old 09-01-2010, 12:41 PM
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thank you Pen, I appreciate it...
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#6 (permalink) Old 09-01-2010, 12:48 PM
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Here's a web source for general steps/tips for flushing out the radiator also: Auto Maintenance - Radiator Flush - How to Do a Radiator Flush - Cooling System - Change Antifreeze

In step three instead of using a dedicated radiator "cleaner flush" a lot of people just refill with water for the "rinse" cycle.


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#7 (permalink) Old 09-02-2010, 02:52 PM
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thank you Todd, I will be reading this ASAP...
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#8 (permalink) Old 09-02-2010, 03:12 PM
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One thing to always remember is that you should never use tap water (ie. from a hose) to flush the radiator.

If you don't buy the 50/50, you need to buy the 100 pure and then an equal amount of distilled water. It will be a little cheaper this way but may not be worth the time since walmart sells the 50/50 prestone for 8.50 a jug.

Last thing, if you un-hook the heater hose you will get air into the heater which is a major pain to bleed. I still think I have some air in my heater hose 1.5yrs later. I will be doing mine again this winter so I will address it then.

07 SE CC Auto
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#9 (permalink) Old 09-02-2010, 05:16 PM
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Quote:
Originally Posted by dubie2003 View Post
One thing to always remember is that you should never use tap water (ie. from a hose) to flush the radiator.

If you don't buy the 50/50, you need to buy the 100 pure and then an equal amount of distilled water. It will be a little cheaper this way but may not be worth the time since walmart sells the 50/50 prestone for 8.50 a jug.

Last thing, if you un-hook the heater hose you will get air into the heater which is a major pain to bleed. I still think I have some air in my heater hose 1.5yrs later. I will be doing mine again this winter so I will address it then.
Hey Dubie,
Isn't there a bleed point at the upper heater core inlet? Mine has a large vacuum cap.

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#10 (permalink) Old 09-02-2010, 07:21 PM
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Originally Posted by micl9 View Post
Hey Dubie,
Isn't there a bleed point at the upper heater core inlet? Mine has a large vacuum cap.
I believe the 2nd gens with the VQ series are without bleeder valves. Its retarted but that is what I have read. Overall I think you almost have to pull a vacuum on the system to get the air out.

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