Honda CR-V 2014 40,000 miles. I had an idea for a simple coolant exchange. I'm not interested in a full on flushing of the radiator, but just looking for a simple way to keep the coolant fresh annually or biennially; hopefully to avoid the need for a full flush later.
The coolant reservoir is tee'd into the radiator cap. I opened the cover of the coolant reservoir, but kept the fill hose submerged in coolant. I opened the petcock which started to siphon fluid up from the reservoir as coolant drained out from the base of the radiator slowly. I kept the reservoir topped up to keep the siphon primed. I did this until I had added 1 gal of total coolant to the reservoir. Then I shut off the petcock when the reservoir was at the "max" line.
Seems like I exchanged about 1 gal of old coolant for 1 gal of new, minus some mixing losses. Shouldn't be at risk for air bubbles since I never broke a line. Is this already a thing? Does anyone else do this? Did this accomplish what I had hoped? Is there any merit to the approach of doing this every 1 or 2 years?
The coolant reservoir is tee'd into the radiator cap. I opened the cover of the coolant reservoir, but kept the fill hose submerged in coolant. I opened the petcock which started to siphon fluid up from the reservoir as coolant drained out from the base of the radiator slowly. I kept the reservoir topped up to keep the siphon primed. I did this until I had added 1 gal of total coolant to the reservoir. Then I shut off the petcock when the reservoir was at the "max" line.
Seems like I exchanged about 1 gal of old coolant for 1 gal of new, minus some mixing losses. Shouldn't be at risk for air bubbles since I never broke a line. Is this already a thing? Does anyone else do this? Did this accomplish what I had hoped? Is there any merit to the approach of doing this every 1 or 2 years?