So to summarize
Originally Posted by cobiker
There's a bunch of different brands of RV Antifreeze (the Pink Stuff) that you can buy. All seem to protect down to -50 degrees F. Wondering if they're all basically the same or are there differences to consider. What do you use?
Pink (11) vs Blue (3)
Pink (-50) there are two main ingredient types;
Ethanol (aka Alcohol) or Propylene Glycol
Blue (-100) also uses Propylene Glycol, just a higher %age.
Possible issues with using Pink (Ethanol based Antifreeze)
- impact on rubber seals and plastic in the water system
- residual taste even after flushing system
- lower flash point then propylene glycol. 110 vs 200 something
Another issue not brought up but discussed in the link Tech Tips: RV Antifreeze: Not All the Same - RV Life Magazine
is whether the materials used are recycled vs virgin.
Best value, cost vs function for RV'rs is Pink (-50) using propylene glycol. Some also may be mix it with Glycerin * or Glycerol ** unless temps get close to -50 and then would opt for the Blue (-100)
Brands using propylene glycol and percentages
Dowfrost ** 18-21% / 11-13%
Super Tech (Walmart) 30%
Splash (O'Rielys) * <20% / < 20%
Camco EasyGoing ???
Percentages based on MSDS sheet
Brands using Ethanol
Camco Artic Ban