Chevy Cobalt Forum banner

Status
Not open for further replies.
1 - 14 of 14 Posts

·
Super Moderator
Joined
·
11,821 Posts
To drain coolant?
 

·
Registered
Joined
·
18 Posts
Discussion Starter #3
Block Drain?

Yes like in the good-ole V8's thay had 1 for each bank of cylinders. Usually located at the very bottom of the block.
 

·
Super Moderator
Joined
·
11,821 Posts
Just the little tap at bottom of rad then you pull the lower hose off.
 

·
Registered
Joined
·
45 Posts
Will that drain the block completely? I heard of a drain plug on the water pump too?

I will be replacing the coolant in my son's car soon and would like to get all the info as well.

Thanks
 

·
Super Moderator
Joined
·
11,821 Posts
Will that drain the block completely? I heard of a drain plug on the water pump too?

I will be replacing the coolant in my son's car soon and would like to get all the info as well.

Thanks
Well you don't need to drain it dry if it isn't contaminated with oil or gas. You can refill with water run until thermostat opens up and drain again then refill with DEX-COOL @ a 50/50 mix. Make sure it is the orange stuff. I use reverse osmosis or distilled water but specifications only require regular tap water.
 

·
Registered
Joined
·
1 Posts
Well you don't need to drain it dry if it isn't contaminated with oil or gas. You can refill with water run until thermostat opens up and drain again then refill with DEX-COOL @ a 50/50 mix. Make sure it is the orange stuff. I use reverse osmosis or distilled water but specifications only require regular tap water.

Correct me if i'm wrong but, When when draining your radiator - Just remove the pitcock(plug) under neat the radiator, close the plug fill with clean or distilled water **preferably** then run it till thermostat kicks in. Fill the coolant reservoir with Dexcool 50/50.

If wanting to completely FLUSH out the system that would require you to add extra step from the top and find the water pump plug by the engine block!

Am I missing anything?
 

·
Registered
Joined
·
18 Posts
Discussion Starter #8
Flush

Well everybody what about Prestone Radiator Flush? I want to use it and want y'alls input.
 

·
Registered
Joined
·
73 Posts
I agree there really is no need to remove all the antifreeze from the car, but the plug on the bottom af the radiator will work wonders in draining down your car.
 

·
Registered
Joined
·
15 Posts
Will that drain the block completely? I heard of a drain plug on the water pump too?

I will be replacing the coolant in my son's car soon and would like to get all the info as well.

Thanks
Hi! I need to replace coolant completely in my 2005 cobalt 2.2. Looking for how to guide. Anybody help? Thanks
 

·
Registered
Joined
·
563 Posts
drain the radiator, fill with water, run for a minute, redrain and refil with 50/50
 

·
Registered
Joined
·
563 Posts
ya just fill back up with water after you flush and reflush. Mostly should be out.
I have to do this, someone mixed dex with green before i bought mine.

Blue coolant is good stuff too, honda
 
1 - 14 of 14 Posts
Status
Not open for further replies.
Top