G'Day all

Looking to flush my ATF at home i have a 99 GU 4.5lt Petrol, looking for any one who has done this, or any advice would be great,
I have a general idea ie drain, drop pan and filter, clean , refit top up, not 100% sure what line to dissconect to pump out old fluid
even if you could direct mt to a good you tube clip or what ever that deals with GU 4.5 petrol that would be awesome!!

Thanks in advance guys!!!

Cheers,

Sean