Time to flush the radiator and I don't know much about cooling system and I don't want to mess things up. Anyone knows exactly how to do it right? Thanks alot.

 

Make sure your cars engine is not really hot, cuz you dont want the coolant spraying out all over the place.

1. Release the radiator cap.
2. Open the Petcock at the bottom of the radiator and let the radiator fluid drip out into a pan.
3. Once completely drained turn on a hose and start to fill the radiator with water.
4. The water will run out of the petcock.
5. While still running the water through the radiator keeping the fluid just below the top have someone start the car.
6. Run the car for a while until all of the fluid coming out from the petcock is no longer green.
7. Once fluid is clear turn off engine and let water drain completely.
8. Shut the petcock and add a 50-50 anifreeze/water mixture.
9. Replace the radiator cap.

It isnt that hard, hope that helps.

 

There's a drain plug on the front of the block too. If you don't remove this I don't see how you are going to get all of the water out before you fill it with the coolant mix.

 

where exactly is the drain plug on the block??

 

It's a big 17 mm (i think) bolt to the left of the exhaust manifold. Do a search for "drain plug" or something. I think it was Antarius who posted a pic of it for me.

 

1) Turn Heater to Hot
2) Release radiator Cap
3) Drain fluid from bottom of radiator
4) Drain fluid from block (if you can get it off -- I skipped this step cause it was frozen on the block and I called the dealer and they said they never did it anyway)
5) Refill with 50 coolant 50% distilled water
6) Put back on radiator cap
---You're done.

You dont need to run the car and flush all of it out like that guy at the top said -- at least, according to Helms you dont.
But, that will work

 

Check out this place!! http://www.team-integra.net/sections...?ArticleID=421 Thats the link to an article on how to do it!

 

Your MUST completely flush the radiator AND block. Remove the drain plugs on both. If you have residual antifreeze in your system and it mixes with the new stuff you could be looking at major costly repairs. Not all antifreeze is compatable. The exception of course, is if you are using the exact same antifreeze that is already in the vehicle.

 

How many miles do you usually drain your radiator at every 30k? I know I own a 2001 Civic, but I asked in here since we already have a good DIY instructions on this thread. TIA guys!

 

Why would different types of antifreeze be incompatible? They're all basically made of the same stuff.