Coolant flush.
Thread Starter
5th Gear
Joined: Sep 2021
Posts: 5
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Coolant flush.
My 2005 is due for a coolant change and It’s been my understanding that running the engine during a coolant flush using fresh water is detrimental to the bearings in the water pump which are lubricated by the coolant.
No coolant… no lubrication.
any input would be appreciated.
No coolant… no lubrication.
any input would be appreciated.
Team Owner
Joined: May 2000
Posts: 53,666
Likes: 5,603
From: Plantation Florida USAF(Retired) 1966-1990
U.S. Air Force
St. Jude Donor '05 thru '26
NCM Sinkhole Donor
What I did, like others took in for service and told them to replace all the fluids, it was time. They have the machines to for the coolant with todays technically to suck out the old coolant, and return with fresh coolant, and no air bubbles, and have them service transmission and rear end and flush the brake system all with fresh fluid, then good for the next couple years.
I know lot of people say they do it them selfs, but at my age and no lift, I'll pay to have it done right. Let's face it these are babies and we need to treat them right.
I know lot of people say they do it them selfs, but at my age and no lift, I'll pay to have it done right. Let's face it these are babies and we need to treat them right.
Safety Car
Joined: Mar 2007
Posts: 4,353
Likes: 538
From: Sarasota FL
St. Jude Donor '25-'26
First drain the radiator. Then remove the lower radiator hose at the radiator.
Remove the upper radiator at the radiator. Loosen the upper radiator hose at the engine and rotate the hose upwards.
Pour 2 - 3 gallons of distilled water into the upper radiator hose thus flushing the block.
Re-connect all hoses. Add the proper amount of anti freeze for your location. Then top off with distilled water.
Run engine. When engine has cooled the upper radiator hose will collapse if air is in the system.
Run engine and squeeze upper radiator hose by hand while engine is running to purge the air into the reservoir.
Add water as needed to fill the system. Repeat as the air is removed from the system.
.
Remove the upper radiator at the radiator. Loosen the upper radiator hose at the engine and rotate the hose upwards.
Pour 2 - 3 gallons of distilled water into the upper radiator hose thus flushing the block.
Re-connect all hoses. Add the proper amount of anti freeze for your location. Then top off with distilled water.
Run engine. When engine has cooled the upper radiator hose will collapse if air is in the system.
Run engine and squeeze upper radiator hose by hand while engine is running to purge the air into the reservoir.
Add water as needed to fill the system. Repeat as the air is removed from the system.
.
Melting Slicks
Joined: Nov 2009
Posts: 3,297
Likes: 1,151
From: Klein TX
2023 C6 of the Year Finalist - Unmodified
2022 C6 of the Year Finalist - Unmodified
My 2005 is due for a coolant change and It’s been my understanding that running the engine during a coolant flush using fresh water is detrimental to the bearings in the water pump which are lubricated by the coolant.
No coolant… no lubrication.
any input would be appreciated.
No coolant… no lubrication.
any input would be appreciated.
