Manual talks about special coolant change/flush procedure at dealer???
 

Does anybody know of a "special" procedure to flush the coolant on 4.8is? A special way to purge or something? Any insight would help, as I will be flushing it soon......thanks.

drain coolant from the bottom of radiator and from the blocks drain plugs. reinstall with new sealing washers.
Before refilling radiator
switch ignition on(do not start engine)
set temp controls to full warm
set blower control to low

Using 50 50 coolant water mixture fill expansion tank slowly. continue until coolant emerges from bleed screw(bleed screw must be loose when filling exp tank)
once coolant comes through bleeder screw with no air you can tighten. tighten expansion cap and let the x reach full operating temp(10min or so) turn off and let system cool. check levels and add more coolant as needed.
personally I used snap on vacuum test and refill which works like a charm at making sure there is no air in the system...runs about 240.00, but you should be fine with your 4.8.

What manual is this?

Henweigh

Never heard of it. Can you post a scan or something?

henweigh= 2-3lbs. I kill myself LOL

Its actually Bentley repair manual.

That's what I thought....thanks.

There isn't anything out of the ordinary for flushing and coolant changes on these. I just flushed my entire system with Evans NPG+ waterless coolant. I have a BG Products CT2 coolant flush machine that will do everything on the car including the engine block, radiator and heater core.

Hen-Wei?
Sounds like Chinese Knock-off of Bentley manual:rofl:

I just looked back in the service manual, and it mentions in the coolant bleeding procedures that:

"On late-model cars with latent heat pump, do not switch ignition ON. These models require additional cooling system bleeding procedures. See your dealer for more information."

This is what I was talking about. Can anyone shed some light on this? thanks.