Old & new antifreeze

[Ole Henry]

Can the old and new types of antifreeze be mixed?

'51 8N

 

[Dell (WA)]

Henry........don't think you can mix the "GREEN" and the "ORANGE" together. 'cides, yer N-Tractor only needs 1-gal of anti-freeze. You do know how to make anti-freeze don't you? Hide her Nighty......(giggle) Dell

 

[Tim PloughNman Daley]

Dell...do you know how to make a hormone? Don't pay her...:>)

-Tim

 

[Dell (WA)]

giggle.........Dell

 

[TheOldHokie]

(quoted from post at 16:39:58 04/16/15) Can the old and new types of antifreeze be mixed?

'51 8N

Not recommended but in most cases yes. Mixing them will effectively eliminate the service life of extended life products and possibly reduce the effectiveness of the corrosion inhibitors.

TOH

 

[Ed Douglas]

Ok.....I will jump in......why is the man the first to die if he is married?..he wants too!!

 

[Ken(Ark)]

(quoted from post at 17:33:33 04/16/15)

(quoted from post at 16:39:58 04/16/15) Can the old and new types of antifreeze be mixed?

'51 8N

Not recommended but in most cases yes. Mixing them will effectively eliminate the service life of extended life products and possibly reduce the effectiveness of the corrosion inhibitors.

TOH

It has been awhile , I did my homework on the green and orange anti freeze .

The orange anti freeze got a bad name only because it is not "extended" and will not last five plus years . It will work perfectly fine if you flush and replace it every two years like you should the green stuff .

The green fails to lubricate and stop rust after two years but will still keep from freezing . The orange does the same but gels when it makes contact with air as the case in a small leak or as it becomes too old in four plus years .

They are incompatable wiith each other but can be changed if the system is completely flushed first .

The penalty for failing to maintain green coolant is mild but the penalty for failing to maintain the orange can destroy a motor .

I do believe they make anti freeze that can be used with either color but you can't mix green and orange - To the best of my knowledge .

 

[Bob Harvey]

You are OLD !....groan

 

[TheOldHokie]

(quoted from post at 19:41:01 04/16/15)

(quoted from post at 17:33:33 04/16/15)

(quoted from post at 16:39:58 04/16/15) Can the old and new types of antifreeze be mixed?

'51 8N

Not recommended but in most cases yes. Mixing them will effectively eliminate the service life of extended life products and possibly reduce the effectiveness of the corrosion inhibitors.

TOH

It has been awhile , I did my homework on the green and orange anti freeze .

The orange anti freeze got a bad name only because it is not "extended" and will not last five plus years . It will work perfectly fine if you flush and replace it every two years like you should the green stuff .

The green fails to lubricate and stop rust after two years but will still keep from freezing . The orange does the same but gels when it makes contact with air as the case in a small leak or as it becomes too old in four plus years .

They are incompatible wiith each other but can be changed if the system is completely flushed first .

The penalty for failing to maintain green coolant is mild but the penalty for failing to maintain the orange can destroy a motor .

I do believe they make anti freeze that can be used with either color but you can't mix green and orange - To the best of my knowledge .

Here is a good read from a reliable source:

[u:33024161be]Learning Coolant Fundamentals[/u:33024161be]

It's a little long and technical so I have excerpted what I believe is the answer to the OP's question.

TOH

From [u:33024161be]Machinery Lubrication[/u:33024161be] article dated January 2006:
[i:33024161be][color=red:33024161be]

The aftermarket is filled with high and low-quality coolants of all colors; [b:33024161be][u:33024161be]therefore, color is not a good indicator of the type of coolant[/u:33024161be].[/b:33024161be] The best maintenance practice is to know the exact coolant required for and placed into an engine, and to control any fluid used to top-off the equipment.

<snip>

Lots of misinformation about the compatibility of the different types of coolant technologies exists in literature and the marketplace. While it is not good maintenance practice to mix two different coolants, it will not result in compatibility issues as long as coolants from high-quality, reputable suppliers are used. [b:33024161be][u:33024161be]Coolants are generally considered to be compatible, however, mixing coolants of two different qualities results in a mixture of intermediate quality[/u:33024161be][/b:33024161be]. While not a disaster, mixing a great coolant with a mediocre coolant will result in a coolant with something of less than great performance.[/color:33024161be][/i:33024161be]

 

[Ken(Ark)]

Here is a good read from a reliable source:

But I got my info from the internet so it has to be true .....

Good info , Thanks for the link .

 

[4play]

I don't think it is smart to assume colors are the same thing. There are different types of greens, orange/pink/red's etc and they are quite different from each other even if the same color.

I'm just saying if you want to use the right type of antifreeze or change types, you need to look at more than the color.

 

[Jock(OR)]

Here is my experience:

My grandson has a 15-year old Ford pickup that needed a thermostat. Someone in the past had changed the
coolant to that orange garbage. We flushed the system completely, running the engine with the garden hose
keeping the system topped off while we let the drain run. We ran the heater to purge the old coolant from the
heater core and lines. Then we changed the thermostat and added green coolant.

The coolant turned into a sludge that we almost could not flush out! We finally got it flushed and converted
to green coolant, but it was a real fight and paid for coolant twice.

 

[ASEguy]

No. You are not supposed to do that in vehicles.