Originally Posted by DebMar
only has sink with holding tank. Can I do the dry method or is it a must for the RV graded antifreeze? Thank you
If you have a small compressor you can blow out the lines easily.
Drain the fresh water tank and blow out that line out to inside sink and toilet. Lots of people forget the toilet and find in the spring the plastic valve on the toilet had a little water and froze and cracked.