rad coolant flush

[deniswhite1]

can some one give me a step by step how to flush my rad coolant?

[ontarian_frog]

Ok...

1. When you open the hood, remove the surge tank cap.

2. The rad plug is on the left hand side on the bottom. Remove it.

3. Once drained, put the plug on, fill the system with 50-50 premixed antifreeze.

4. Run the engine until at operating temp, then drive for 15 minutes.

5. Wait for the coolant to cool, and remove the plug and drain again.

6. Put plug back on and refill with fresh 50-50 premixed antifreeze again.

7. Stand back and admire a job well done.

[MetroAveo]

Couldn't you fill it with just water for the 15 minute drive, and use the 50/50 for the final fill-up?

[loose]

y would you do this flash thing you guys are talking about?

[y2dgone]

y would you do this flash thing you guys are talking about?

I'm sure he means flush... to get the crud out of there that accumulates over time

[deniswhite1]

how much coolent do i need to fill the system, so i fill it at the surge tank?

[khan4rtist]

how much coolent do i need to fill the system, so i fill it at the surge tank?

it should say in your owner manual

[ontarian_frog]

Couldn't you fill it with just water for the 15 minute drive, and use the 50/50 for the final fill-up?

That's what GM says in the Daewoo Manual but you can't get a 50-50 mix after because some of the water stays in the system. When using the 50-50 mix, you get no chance of messing the balance. Trust me I've been having only problems getting my mix back up to 50-50.

You should only need 2 gallons for this.

[subachad]

to avoid build up, only use distilled water.

And as for flashing, perhaps you will scare the mineral deposits out of your system... I would suggest giving this a shot and let us know the results.

[y2dgone]

And as for flashing, perhaps you will scare the mineral deposits out of your system... I would suggest giving this a shot and let us know the results.