Factor | Antifreeze | |||||
Methanol | Ethanol | Propylene glycol | Potassium Acetate | CMA | Urea | |
Life cycle cost | 3 | 3 | 2 | 2 | 2 | 3 |
Corrosion risk | 2 | 2 | 3a | 2 | 2 | 1 |
Leakage risk | 3 | 2 | 2a | 1b | 1 | 1 |
Health risk | 1 | 2 | 3 | 3 | 3 | 3 |
Fire risk | 1a | 1c | 3 | 3 | 3 | 3 |
Environmental risk | 2 | 2 | 3 | 2 | 2 | 3 |
Risk of future use | 1 | 2 | 3 | 2 | 2 | 2 |