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View Full Version : Radiator Flush


longarm
05-18-2008, 09:24 AM
Anyone know of a good tutorial on how to really flush out a radiator on an 05 TJ/LJ? I want to get all the old coolant out, flush it and add new coolant. If anyone can point me in the right direction I'd greatly appreciate it. Thanks in advance.

Mudviper
05-18-2008, 05:16 PM
Since it doesn't need to be done that often, I usually just take mine up to the quick oil change place and have them run it through their system.

xj97sport
05-18-2008, 07:24 PM
or disconnect the lower radiator hose drain it then take off both heater core hoses and put a hose up to one of em and flush it then take the hose and put it in the fill neck and flush it then if ya wanna do the block ... well have fun with that

Rob the plumber
05-18-2008, 07:54 PM
It is messy to do it yourself, but opening the radiator drain and blowing through one of the heater hoses like mentioned earlier does a decent job.
I 've wondered about using a chemical like CLR or plain vinegar to remove the scale from inside the radiator before flushing.