coolant flush confusion
#16
10-07-2005 | 08:22 AM
Senior Member
Joined: Dec 2004
Posts: 368
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From: Angleton, Tx
From Prestones website
"Tip
If you decide to replace your existing antifreeze/coolant with Prestone® Extended Life 5/150 Antifreeze/Coolant, make sure you completely drain and flush the cooling system first in order to gain the full benefits of the longer-lasting formula. Also, if you are currently using Prestone Extended Life 5/150 Antifreeze/Coolant in your car's cooling system, and you add a conventional antifreeze/coolant, you will lose the extended protection.
"
"Tip
If you decide to replace your existing antifreeze/coolant with Prestone® Extended Life 5/150 Antifreeze/Coolant, make sure you completely drain and flush the cooling system first in order to gain the full benefits of the longer-lasting formula. Also, if you are currently using Prestone Extended Life 5/150 Antifreeze/Coolant in your car's cooling system, and you add a conventional antifreeze/coolant, you will lose the extended protection.
"
#17
10-07-2005 | 08:58 AM
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Joined: Sep 2005
Posts: 2,618
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From: Atlanta, GA
I guess having all the equipment for this stuff for years, I have begun to take it for granted. I have the flush machine you connect to the upper radiator line and block. Fire it up and it runs itself through, getting about 98% changed, or if you run it longer it will get 100%. I always add a little sealant to a radiator when I flush it, just to be sure.
And for gods sake don't mix dexcool with green stuff. The end product is a brown goey mess that takes quite some time to get out.
And for gods sake don't mix dexcool with green stuff. The end product is a brown goey mess that takes quite some time to get out.
#18
10-07-2005 | 11:38 PM
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Joined: Jul 2004
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From: Easton, Pa.
#19
10-08-2005 | 12:06 AM
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Joined: Jun 2005
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Originally Posted by MitchF150
On one of the underhood stickers that list emission stuff, fan belt routes, spark plug gap, etc, there should also be a coolant spec listed. A while ago, I got that spec and looked on Prestones web site and found that their standard 'green' stuff met the spec. That's what I've been using, but that does not mean that's what you can use...
Check the spec and that will tell you what you need...
Mitch
Check the spec and that will tell you what you need...
Mitch
So I'm just going to flush it (block and heater core the best I can) and put 50/50 premix green in there.
I'm not sure what is in it right now
, it's definitely not the green. I'm thinking it might be prestone yellow, but it is a bit dirty, and since I just got this truck in June, it needs to be flushed to be safe. Mystery is just one of the things encountered with any pre owned vehicle. 
#20
10-08-2005 | 11:29 AM
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Joined: Jul 2005
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Originally Posted by Bluegrass
Reference the Motorcraft website on coolant info. There are 4 coolant designations.
http://www.motorcraft.com/products.do?item=6
Premium Engine Coolant Green-colored, conventional, ethylene glycol based, universal formulation for use in gasoline and diesel engines. ESE-M97B44-A
Specialty Orange Engine Coolant, meeting Ford Material Specification WSS-M97B44-D
Premium Gold Engine Coolant, meeting Ford Material Specification WSS-M97B51-A1
They do say not to mix them but they don't really say why?