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Old 11-16-2009, 09:30 PM   #1
350Z400rwhp
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Default Possible alternative to avoid the "Coolant Purge Nightmare"?

I have a 1997 Acura Cl with 240K miles and I technically have never changed the coolant. What I do is buy the coolant from the dealer so it is the exact same and just drain the radiator and refill once a year and have had no problems with my water pump, heater core or thermostat. I'm approaching that mileage where I need to change the coolant on my Z. I would rather just avoid the hassel of the process of purging the air bubbles that so many of us seem to have when changing our coolant. My plan is to empty and fill my radiator, drive the car for a day and repeat the process for a total of 2 to 3 times. I would imagine that this would do a pretty good job of changing out the fluid and be much simpler. I'm not worried about the $20-30 of extra cost if I can avoid doing a complete flush. What do you guys think? Good idea or not?
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Old 11-16-2009, 10:28 PM   #2
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Use this product made my Lisle
http://tinyurl.com/yllxfms


I got this to use on my RX7 and it works great to completely purge the system.

Here is a video of it being used on an RX7


You can buy it for $25-30 including shipping off of ebay and save yourself the cost of the extra coolant, plus be able to flush the radiator more often.
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Old 11-16-2009, 10:40 PM   #3
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... or you can buy the correct tool and put the coolant system into a vacuum and then pull in the coolant and then there is no air... can be bought from kent-moore, snap-on or matco... im pretty sure there is one made by everyone
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Old 11-16-2009, 10:48 PM   #4
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The trick to purging the air bubbles is to re-fill at a very slow rate -- almost as if you were peeing into the radiator.
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Old 11-16-2009, 11:35 PM   #5
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well personally intend to service mine every 30k. just do a drain and refill. Just did a full flush at 60k so next one is due in 90, just the drain and fill of course.
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Old 11-17-2009, 12:30 AM   #6
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Park in a steep road which your front end points up. Fill up the coolant, turn heater on full, starts the car, wait until thermostat open, refill DONE.

The product dhays mentioned is a very good tool, not expensive and save you a lot of time cleaning up if you flush your coolant once in a while.
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Old 11-17-2009, 06:05 AM   #7
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or you can just follow the procedure in the factory service manual and fill it 1 time
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Old 11-17-2009, 06:05 AM
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