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Topic: Antifreeze - Propylene Glycol or Ethylene Glycol? (Read 1350 times) previous topic - next topic
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Antifreeze - Propylene Glycol or Ethylene Glycol?

Yahoo Message Number: 5422
Fleetguard makes both Ethylene Glycol and Propylene Glycol based coolants, and they are not compatible and can not be mixed. Both are available in the Fleetguard Compleat Pre-mix formula for easy use.
FYI... I've been told several times by Country Coach Service that CC uses Propylene Glycol based Fleetguard coolant exclusively.

Robert

Re: Antifreeze - Propylene Glycol or Ethylene Glycol?

Reply #1 –
Yahoo Message Number: 5424
Prestone also markets a propylene based antifreeze at a reasonable price. I buy it at Auto Zone.

Walt Rothermel
03Allure30811

Re: Antifreeze - Propylene Glycol or Ethylene Glycol? READ THIS!

Reply #2 –
Yahoo Message Number: 5425
Hi Folks,

Here is what I have learned.

Only Fleetguard Compleat (CC2820 for blue) should be used because it contains the additves required for Cummins engines (DCA4 additives - nitrites and molydates. Green or blue - I stick with blue ethylene glycol. I think Propylene is green. I don't know if green Compleat is marketed, but if used you don't know if car antifreeze was added. If you add more than a 0.5 gal of regular car antifreeze green or pink, you must do a full drain, baking soda cleaning and replacement with Compleat soon after the use of car antifreeze(ref: Users guide
1.9.3.,1.9.4. for procedures). The coolant replacement is required
every two(2)years. I recently rewrote the replacement procedure for Country Coaches consideration as the current procedures are for older coaches and are misleading.
Fred Kovol

Re: Antifreeze - Propylene Glycol or Ethylene Glycol? READ THIS!

Reply #3 –
Yahoo Message Number: 5430
Hey Fred; Thanks for your comments. I'm happy to hear an expert chime in on this topic. I have a couple of questions for you...

On the Fleetguard website, BOTH the Propylene Glycol (http://www.fleetguard.com/fleet/pdfs/MSDS/MSDS_US/LT16590A.pdf) and Ethylene Glycol

(http://www.fleetguard.com/fleet/pdfs/MSDS/MSDS_US/LT16588A.pdf) products are listed as BLUE. Since they are BOTH BLUE in color, I called Country Coach to find out what they use. They told me that they use Propylene Glycol exclusively.

Also, I was told that the 2 types are generally not mixable and if the wrong type is used, a clumping action will gradually reduce the cooling effectiveness of the system and cause it to eventually fail.

What do you think of all this? Any comments?

Also, could you please post your updated antifreeze changing procedure? If the manual is wrong, it would be nice to know the correct way to change the fluid.

Thanks,

Robert

Quote from: fredkovol

Hi Folks,

Here is what I have learned.

Only Fleetguard Compleat (CC2820 for blue) should be used because it > contains the additves required for Cummins engines (DCA4 additives - > nitrites and molydates. Green or blue - I stick with blue ethylene > glycol. I think Propylene is green. I don't know if green Compleat

is

Quote
marketed, but if used you don't know if car antifreeze was added. If > you add more than a 0.5 gal of regular car antifreeze green or pink, > you must do a full drain, baking soda cleaning and replacement with > Compleat soon after the use of car antifreeze(ref: Users guide > 1.9.3.,1.9.4. for procedures). The coolant replacement is required > every two(2)years. I recently rewrote the replacement procedure for > Country Coaches consideration as the current procedures are for

older