Author Topic: coolant flush?  (Read 1102 times)

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spaded1

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coolant flush?
« on: Jul 20, 2009, 05:22:35 PM »
whats the easiest way to do one

crawlerdad

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Re: coolant flush?
« Reply #1 on: Jul 23, 2009, 10:11:57 PM »
Just pull the plug at the bottom of the radiator, drain, run some water through, replace plug. Fill it up with water, run till it warms up and the thermostat opens up, drain it again and refill with coolant and water mix of your choice. always check your hoses before you drain. If they are squishy replace them since you will have it drained. Some people replace the thermostat at this point too.
Precision guess work done here.

Cheesemaker

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Re: coolant flush?
« Reply #2 on: Jul 23, 2009, 10:35:35 PM »
When filling back up, it also helps to park on a incline if possible.  Helps get the air out of the system.
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kneedownnate

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Re: coolant flush?
« Reply #3 on: Jul 23, 2009, 11:03:53 PM »
There's also a drain thingy hidden behind the exhaust manifold I think.  On the last truck I drained the radiator, filled it back up with water and flushed it running with the hose for several minutes, filled it back up with 50/50 and ran it on an incline.  Everything was great, then the new owner took it for a test drive and when it came back it had no hint of green.  I suggested he do an immediate flush when he got home and hopefully he did. 
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wingdaddy

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Re: coolant flush?
« Reply #4 on: Jul 24, 2009, 07:40:20 AM »
  :thumbs:I have a friend that owns an auto repair shop, and has for over 20 years. On most vehicles, all older models, he drains the old coolant then puts Tide laundry detergent [ 1 cup powder ] fills with water. His reason is that the enzymes in the Tide brand remove any acids and impurities in the system. Run it up to operating temp, redrain and replace with 50\50 mix of water and coolant. :twocents:

*ROKTOY*

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Re: coolant flush?
« Reply #5 on: Jul 24, 2009, 08:09:43 AM »
I like to drain radiator and block, fill, run, drain, fill and run with drain plugs open, heater on and garden hose running in rad till it comes out clear.

wakkjobb

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Re: coolant flush?
« Reply #6 on: Jul 24, 2009, 09:02:00 AM »
/\ +1  :thumbs:
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Re: coolant flush?
« Reply #7 on: Jul 24, 2009, 12:51:47 PM »
I used Oxy-clean instead of Tide.........

Put one of those flush kits on the heater hose.

After draining and catching the A/F (to properly dispose of) I run the engine with the flush kit for awhile (don't both catching, as it's just water now, no A/F)..........
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