| So the overflow tank/resovoir was empty so I bought some prestone dexcool and poured it in. Later when the engine was cool I opened the radiator cap and saw regular green coolant. So it will eventually get all mixed up 
So what do ? For snooping around the Internet I read some horror stories of dexcool and suggest to go with pure coolant instead. I now want to fully flush the system but not sure to go with 50/50 mix of dexcool/water or full antifreeze like Prestone or even their 50/50 premixed coolant. |
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Mixed Dex-cool with regular coolant
- Thread starter 4u33er
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D
Dennis
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Pull the bottom radiator hose and drain out (about 1.5 gallons will come out)..refill with Dex-cool and drive for about a 100 miles and do it again top off your reservoir tank while in this period..your Coolant system requires Dex-cool only for all the strange metals involved.
If you are mixing the concentrate, make sure you mix it only with 50% distilled water ONLY
If you are mixing the concentrate, make sure you mix it only with 50% distilled water ONLY
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D
Dennis
Guest
Yup
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MaxPF
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Drain completely and refill. NEVER use pure anti-freeze. It must me mixed 50/50 with distilled or deionized water (or up to 70% AF, 30% water if you're in arctic conditions). Or buy premix. Dex-cool is what GM recommends for the H2 and H3, and I see no reason to use anything else. All of the modern advanced chemistry antifreezes have similar properties and work well, but they are not necessarily compatible with one another and should never be mixed.
Unless I'm mistaken, AMG specs Dex-cool for the H1, but I prefer using coolants with additives that prevent cavitation erosion damage in diesels, even engines like the 6.2 and B series Cummins that generally don't have issues with cavitation erosion. I use Zerex Extended Life, but any coolant meeting the Cat EC-1 and/or Cummins 14603 spec will work just as well. This stuff works great in place of Dex-Cool as well (diesel or gas), but don't mix the two! If you're engine has Dex-cool in it and you aren't draining the system, then stick with Dex-cool for top-offs.
Unless I'm mistaken, AMG specs Dex-cool for the H1, but I prefer using coolants with additives that prevent cavitation erosion damage in diesels, even engines like the 6.2 and B series Cummins that generally don't have issues with cavitation erosion. I use Zerex Extended Life, but any coolant meeting the Cat EC-1 and/or Cummins 14603 spec will work just as well. This stuff works great in place of Dex-Cool as well (diesel or gas), but don't mix the two! If you're engine has Dex-cool in it and you aren't draining the system, then stick with Dex-cool for top-offs.