Coolant flushing question

[Dobby84]

Just a quick one guys.

I'm about to change my radiator and stat and planning to flush the system before replacing the coolant with G13 so everything is nice and new.

Should I flush the system with the old radiator still installed? I'll take the stat out first though to allow flow etc.

Cheers

[Monkeymagic]

I flush it out without any rad in so as not to push silt around.

[Sleeper_Avant]

and make sure to flush it BACKWARDS also as it will help dislodge any stubborn crud

[Dobby84]

and make sure to flush it BACKWARDS also as it will help dislodge any stubborn crud

Backwards as in put the hosepipe into the thermostat connection rather than throng the header tank?

[Monkeymagic]

Exactly that. From both ends til it runs clear