I'm about to replace the coolant in my C5 2012 with 3.0 V6 HDI.
The current coolant looks rusty, so I believe its corrosion inhibitors have worn out.
I've done my research and located the bleed valve on the heater hose, but I've had no luck with the other one.
Could anyone who replaced the antifreez in 3.0 HDI engine tell, if there are any other bleeder?
Or that one on the heater hose is the only one?
C5 2012 - HDI240 3.0HDI V6 coolant bleeder location
-
Xeper
- Posts: 5
- Joined: 16 Dec 2025, 11:07
- x 1
-
mickthemaverick
- Moderating Team
- Posts: 20096
- Joined: 11 May 2019, 17:56
- x 7794
Re: C5 2012 - HDI240 3.0HDI V6 coolant bleeder location
You may find a read through this thread will give you an idea: viewtopic.php?p=829264#p829264 
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
I used to ride on two wheels, but now I need all four!
-
Xeper
- Posts: 5
- Joined: 16 Dec 2025, 11:07
- x 1
Re: C5 2012 - HDI240 3.0HDI V6 coolant bleeder location
Thank you Mick. Actually, this thread was my starter - had some discussion with wurlycorner (OP) there.
Finally it turned out, that some confusion between petrol vs diesel engine could happen there, thats why I started a dedicated topic to pin the proper info if possible.
Finally it turned out, that some confusion between petrol vs diesel engine could happen there, thats why I started a dedicated topic to pin the proper info if possible.