Switching from IAT to G04

use g48 .. and one way to get rid of the old stuff is to do 4 -6 flushes with plain distilled water and see when it gets pretty clean / clear
on last flush ...drain as much as possible ( in fact do every time ) by blowing some air in tank and opening radiators drains and then adding straight G48 ( concentrated) equal to 1/2 the user manual capacity
There are many ways to drain .. the one above is one of the less complicated but not the most quickest
Use a vacuum tool to fill each time

 

Dominick- Personally, I love G05 and have used it for 17 years, especially since they changed the composition to use HOATs. Does need to be changed every 2 years, but if I had a 360, I would be doing it annually to make sure the heat exchanger had not gone south.

 

and g05 has supplemental coolant additive good for anti cavitation an issue reported in some 12 cylinders. Zerex says five years or 150k miles and these cars generally are low mile.

 

Iirc the reason I advise against it in a 360 is wiith all the failures of heat exchange due to either solder or copper degradation coupled with some reports of Ford have issues with the g05 in a similar fashion. I recommend the g48 which was OEM fill, ( also for MB and BMW at that time) has less affect on copper and solder based on manufacturer specs, and has the anti cavitation properties as well
It is used in large diesel trucks as well
That recommendation and the proper gear oil I feel will reduce failures
Everybody has their own their own choices I just give you what I believe is the way to go..in a 360.
I may consider G05 in other models though