DOWFROST Premix 50/50 Concentrate Size:5 gallon pail you may want to use

you may want to use CitriSurf 77 Plus which has additional additives to aid in rust removal

The fluid is dyed fluorescent yellow-green for leak detection purposes

0 percent propylene glycol and a specially designed package of industrial corrosion inhibitors

0 percent food grade propylene glycol plus food grade corrosion inhibitors

DOWFROST Premix 50/50 Concentrate Size:5 gallon pail you may want to useA formulation of 96. 0 percent food grade propylene glycol plus food grade corrosion inhibitors. Solutions of this in water provide freeze protection to below 50C ( 60F) and burst protection to below 73C ( 100F). It is made entirely from food grade raw materials conforming to FDA CFR 21 and NSF guidelines and is acceptable for use as a heat transfer fluid where there is possibility of incidental food contact.