TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Fluid: The fluid further comprises a corrosion inhibitor; a thermal stabilizer; at least one of: i) a pH stabilizer or buffer such as triisopropanol amine or borax; ii) an antiscaling additive such as sodium polyacrylate polymer; and iii) a biocide such as nipacide; sodium hydroxide. The fluid comprises (wt./wt.%): surfactant (0.01-1) and glycerin (30-60); or a) glycerin (5-50) and b) water (39.5-59.97), at least one of: c1) a polyoxyethylene (n) lauryl ether, where n is 6-12 (0.01-0.5), c2) triethanolamine (0.01-0.1), c3) glycerol ethoxylate (0.01-1), at least one of: d1) tetra (2-hydroxypropyl) ethylenediamine (0.2-1), d2) polyethyleneglycol (0.02-1), d3) pentaerythritol (0.01-0.1), at least one of: e1) tolyl triazole (0.2-1.5), e2) benzotriazole (0.01-0.5), e3) aspartic acid (0.01-0.25), e4) sebacic acid (0.01-0.5), e5) sodium molybdate dihydrate (0.01-0.1), e6) morpholine (0.01-0.1), e7) molybdic oxide (0.01-0.3), e8) borax (0.01-1), and optionally at least one of f) sodium polyacrylate polymer (0.05-0.5), g) triisopropanol amine (0.01-0.5), h) sodium hydroxide (0.01-0.05), i) a biocide (0.01-1.5) and j) mono-propylene glycol (0.01-10); or a) glycerin (40-50) and water (40.65-59.44), at least one of: c1) decaethylene glycol monododecyl ether (0.01-0.5), c2) triethanolamine (0.01-0.1), c3) glycerol ethoxylate (0.01-1), and d1) tetra (2-hydroxypropyl) ethylenediamine (0.2-1), d2) polyethyleneglycol (0.02-1), d3) pentaerythritol (0.01-0.1), and e1) tolyl triazole (0.2-1.5), e3) aspartic acid (0.01-0.25), e6) morpholine (0.01-0.1), e7) molybdic oxide (0.01-0.3), e8) borax (0.01-1), and f) sodium polyacrylate polymer (0.05-0.5), g) triisopropanol amine (0.01-0.5), and optionally at least one of h) sodium hydroxide (0.01-0.05), i) a biocide (0.01-1.5) and j) mono-propylene glycol (0.01-10); or a) glycerin (43-47), b) water (50.24-55.50), c1) decathylene glycol monododecyl ether (0.075-0.125), c2) triethanolamine (0.25-0.35), d1) tetra (2-hydroxypropyl) ethylenediamine (0.25-0.75), d2) polyethyleneglycol (0.075-0.125), d3) pentaerythritol (0.025-0.075), e1) tolyltriazole (0.25-0.35), e3) aspartic acid (0.025-0.075), e6) morpholine (0.04-0.08), e7) molybdic oxide (0.01-0.03), e8) borax (0.35-0.55), f) sodium polyacrylate polymer (0.075-0.125), and g) triisopropanol amine (0.075-0.125); or a) glycerin (43-47), b) water (52.765-56.875), c2) triethanolamine (0.01-0.02), e1) tolyltriazole (0.01-0.02), e4) sebacic acid (0.01-0.02), e7) molybdic oxide (0.01-0.02), f) sodium polyacrylate polymer (0.075-0.125), and i) biocide nipacide (0.01-0.03); or a) glycerin (37.5-42.5), b) water (46.1-56.945), c2) triethanolamine (0.01-0.02), c3) glycerol ethoxylate (0.25-0.75), d1) tetra (2-hydroxy propyl) ethylenediamine (0.1-0.25), d3) pentaerythritol (0.075-0.125), e1) tolyltriazole (0.075-0.125), e5) sodium molybdate dihydrate (0.01-0.05), g) triisopropanol amine (0.025-0.075) and h) sodium hydroxide (0.01-0.05), j) mono-propylene glycol (5-10). Preferred Components: The corrosion inhibitor is selected from tolyl triazole, benzotriazole, aspartic acid, sebacic acid, borax, molybdic oxide, triethanolamine, sodium molybdate dihydrate and/or morpholine. The thermal stabilizer is selected from tetra (2-hydroxypropyl) ethylenediamine, polyethyleneglycol and/or pentaerythritol. The surfactant comprises: i) polyoxyethylene (n) lauryl ether (where n is 6-12); ii) triethanolamine; and/or iii) a glycerol ethoxylate (preferably decaethylene glycol monododecyl ether). EXAMPLE - A heat transfer fluid comprising (wt./wt.%): tetra (2-hydroxypropyl) ethylenediamine (0.5), polyethylene glycol (0.1), tolyl triazole (0.3), triisopropanol amine (0.1), aspartic acid (0.05), sodium polyacrylate polymer (0.1), molybdic oxide (0.02), triethanolamine (0.3), morpholine (0.06), pentaerythritol (0.05), decaethylene glycol monododecyl ether (0.01), glycerin (45) and water (balance) was prepared.