Rad Flush - antifreeze question
Winter is coming and don't ask but I am in the midst of a thorough radiator flush and hose replacement. The chemical cleaner I am using suggests driving the for 3-6 hours over a few days to allow the ...
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I use Prestone Radiator and Flush, which has similar directions. I did not want to spend that much time so I just took about a 1-2 hour drive. Drained the water/flush coolant and refilled with water. Drove about 15--30 minutes with the heat on, then drained that water. Repeat. YES, a second clean water flush.
Most modern engine have no way of draining the block so there is still a lot of clean water in the block. Looking at the total cooing system volume (owner manual) I calculated home much 100% antifreeze should be in the system.
I double checked the antifreeze concentration the next day after another 1+ hour drive. It was actually too high, so I removed about 2 quarts and add that much water back.
A few months later I had a mechanic ask how did I get the remote coolant reservoir so clean for an 17 year old vehicle.
Most modern engine have no way of draining the block so there is still a lot of clean water in the block. Looking at the total cooing system volume (owner manual) I calculated home much 100% antifreeze should be in the system.
I double checked the antifreeze concentration the next day after another 1+ hour drive. It was actually too high, so I removed about 2 quarts and add that much water back.
A few months later I had a mechanic ask how did I get the remote coolant reservoir so clean for an 17 year old vehicle.
