Topping up coolant when unsure what type of coolant is currently in the truck? - Diesel Bombers

Ford Powerstroke 99-03 7.3L Discussion of 99-03 7.3 Liter Ford Powerstroke Turbo Diesels

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Old 01-16-2018, 07:47 AM
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Join Date: Apr 2012
Posts: 1
Default Topping up coolant when unsure what type of coolant is currently in the truck?

2001 F250 7.3

Hey guys so I bought my truck about a year ago with a newer rad.

It appeared to be the regular green coolant so I questioned the previous owner. He assured me that it was the proper coolant for the 7.3. The previous owner did take care of this truck so I believe that whatever is in there is OK for this truck.

Here’s the problem. The truck has developed a slow coolant leak and I really need to top up the overflow bottle for now as it is too cold to do a flush and repair and refill.
Can I simply top off with Red ELC? Is there a coolant for these diesels that looks like the regular green stuff? Any ideas?

Thanks for the help
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Old 01-21-2018, 04:54 PM
joebob3093's Avatar
Join Date: Jul 2008
Location: Powell Butte, OR
Posts: 2,556

if its green i would use green, if its red i would use red
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Old 01-25-2018, 10:39 AM
gunman41mag's Avatar
Join Date: May 2008
Posts: 66,537

When I had to replaced the radiator on my 2013 FORD F-250, I called PRESTONE & they told me I can use
  • For use in all makes and models of cars and light duty trucks
  • Compatible with any antifreeze/coolant, regardless of color
  • Good for 5 years or 150,000 miles
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