Automotive vs. RV antifreeze
Can I use regular automotive antifreeze in the black and gray water tanks and sink traps or must I use the RV antifreeze? I am in NE AR and only blow out the water lines to winterize our MH.
Forum Discussion
Grandpere wrote:Y-Guy wrote:
Scott you are completely wrong. From the EPA, "Antifreeze is toxic to humans and animals. Waste antifreeze contains heavy metals such as lead, cadmium, and chromium in high enough levels to potentially make it a regulated hazardous waste, so most states strictly regulate antifreeze disposal."
Do you want that stuff in your water system or environment? It is totally irresponsible to dump any amount down the sewer.
I did not know that, that is why I asked. I will be using RV antifreeze and hope for the best.
Keep in mind RV "antifreeze" actually will freeze to some extent. It will turn to a mush at about -20*F and to a solid at about-50*F in full concentration. It will freeze at higher temperatures when mixed with water.
The big difference between RV antifreeze and water is that the RV antifreeze doesn't expand when it freezes. Most damage is done when water expands and breaks things as it freezes.
We've been using RV antifreeze in full concentration in fresh water lines and P traps for many years. The coldest it gets around us is -30*F and that's unusual.
