What is the process to flush and change antifreeze?

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  #1  
Old 09-11-05, 10:41 PM
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Location: Staten Island, NY (NYC)
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What is the process to flush and change antifreeze?

I have a 2000 Montero Sport and would like to know how to change and flush the antifreeze. Also how much antifreeze to water ratio should I put in? IE: 50/50. Thank you.
 
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  #2  
Old 09-12-05, 12:09 PM
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Location: Livonia, Michigan
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The procedure I use is as follows:

1. Drain fluid
2. Remove the thermostat
3. Reinstall the t-stat housing and upper radiator hose
4. Disconnect upper radiator hose at radiator
5. Flush system with garden hose through upper radiator hose until water runs clear
6. Disconnect heater hoses, open heat valve
7. Flush heater core
8. Flush overflow tank
9. Drain as much water as possible from cooling system
10. Siphon water from overflow tank
11. Reinstall thermostat
12. Button everything back up
13. Refill cooling system with specified amount of antifreeze to end up with a 50% mix, bring up to level with water, preferably distilled
14. Run car, top off coolant
15. Keep adding water as required every morning until system is topped off.

This procedure is done on a cold engine. I use this method for every car I own.
 
  #3  
Old 09-12-05, 11:28 PM
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Originally Posted by Kestas
The procedure I use is as follows:

1. Drain fluid
2. Remove the thermostat
3. Reinstall the t-stat housing and upper radiator hose
4. Disconnect upper radiator hose at radiator
5. Flush system with garden hose through upper radiator hose until water runs clear
6. Disconnect heater hoses, open heat valve
7. Flush heater core
8. Flush overflow tank
9. Drain as much water as possible from cooling system
10. Siphon water from overflow tank
11. Reinstall thermostat
12. Button everything back up
13. Refill cooling system with specified amount of antifreeze to end up with a 50% mix, bring up to level with water, preferably distilled
14. Run car, top off coolant
15. Keep adding water as required every morning until system is topped off.

This procedure is done on a cold engine. I use this method for every car I own.

Thanks for the info but I have some BASIC questions.

1. Where do I drain the coolant from?
5. When I flush the system via the upper radiator hose where will the water come out?
6. Where are the heater hoses? What/where is the heat valve?

Sounds like lots of work. How often should this be done?
 
  #4  
Old 09-13-05, 06:27 AM
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Location: Livonia, Michigan
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Drain the coolant using the petcock located at the bottom of the radiator.

During flushing, everything will come out the radiator at the upper radiator hose connection.

The two heater hoses are the hoses going into the firewall. Your car may or may not have a heater valve.

This procedure must be done every 3 years or 30K, whichever comes first.

I usually budget two hours for a job like this.

You really should get a service manual of some sort to become familiar with the layout of stuff under the hood before undertaking this task.
 
  #5  
Old 09-13-05, 06:59 AM
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Join Date: Apr 2005
Posts: 242
another way

Buy a flush n fill kit from parts house, it comes with some T's clamps and a cap. The T goes inline in the heater hose. Cut the inlet heater hose and put the T (from the kit) inline with the hose(clamp iot good). A water hose adapter (in the kit) can be screwed to the top of the T. Take the radiator cap off.........Turn the water hose on......and let it flush until clean.

the water will go through the heater hose at the top of the block.......against the bottom of the thermostat and then travel through the block to the bottom radiator hose then up through the bottom to the top of the radiator...........................When its clean turn off water take hose off.......put cap(that comes in the kit back on the T......drain the radiator using the pet **** and add coolant.................
 
  #6  
Old 09-13-05, 11:30 PM
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Location: Staten Island, NY (NYC)
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Thanks. As soon as it cools off a bit I'll take a look at the engine and see if I can find all the hoses and drain valve. It's a heat wave in NYC 90+ degrees.
 
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