Any RV N.S.F. non toxic anti freeze is compatable with the accumulator, its non toxic and safe to the material...basicly the accumulator is a rubber ballon inside a plastic tank. Its components are the same material the pump is made off.
Can anyone tell me what happens with accumulator tanks when winterizing the water system in the trailer?
I'm contemplating adding one in at the same time as doing my pump replacement, but want to make sure how the antifreeze process works with this.