flushing cooling system

[A. Brown]

do I really need to use a flush when changing coolant, I've changed out a couple of times and there is very little deposit in the old coolant, my cummins shop said it was fine to use a flush like prestone if I wanted too. Has anyone used a flush in our engines?

 

[Motorhead]

I don't use a flush unless the cooling system is real dirty. Some of those flush products can for some reason cause a water pump to start leaking afterwards. I pull the thermostat out with the bottom radiator hose off and back flush the block with a hose nozzle full force. I also back flush the radiator from the bottom up. Chris

 

[rono]

There's an excellent article in the last issue of the TDR magazine on how to flush the cooling system.

Ron

 

[A. Brown]

just re-joined the club, don't have the last issue.

 

[Extreme1]

Originally posted by Motorhead

I don't use a flush unless the cooling system is real dirty. Some of those flush products can for some reason cause a water pump to start leaking afterwards. I pull the thermostat out with the bottom radiator hose off and back flush the block with a hose nozzle full force. I also back flush the radiator from the bottom up. Chris

Ditto!



Just be sure to open the drain plug because the lower hose is actually several inches up the radiator.

 

[rono]

A. Brown



PM your fax number and I'll fax you a copy of the article.

Ron

 

[A. Brown]

that would be great rono, fax is 434- 982-7233