| If you flush with water, you should get a hydrometer and check the glycol water ratio. When you add a 50/50 mix the water will dilute the mix and you will wind up with anti-freeze protection that may not meet your minimum winter conditions. The results will not be pretty when engine blocks or freeze plugs go. The idea of a water flush is thorough but the dilution problem keeps me away from it unless I have pure glycol to add back. Mixing isn't a problem. The two important ingredients are ethylene glycol and the corrosion inhibitors (and, I forgot, the water). For most US conditions the minimum temperatures are met with a 50/50 glycol/water mixture. Since glycol also acts as a corrosion inhibitor that mix aids in helping the other inhibitors that the manufacturer may have added. This topic has been discussed before so you might want to do a search and get the others' viewpoints. |