Is it necessary to separately drain/flush/refill the supercharger intercooler circuit? I know it's shared with regular cooling but not sure how well they really mix and circulate. Since I'm not sure what coolant type I currently have I want to do as complete a replacement as I can - ignoring complications of heater circuit. Plan to drain from lower radiator hose, flush and drain repeatedly with distilled water and then replace coolant as described in some older posts but haven't seen any discussion of intercooler side. Might be overthinking it....

 

The sub systems coolant thourauly ( sp ) mix

There are a couple of TSBs to get to the final coolant type , and they don't mix from my understanding

The replacement had to do with the heater core / matrix clogging / poor cabin heating ( phosphates buildups / deposits on the heater core )

The coolant circuit can be found on page X , which includes also the SC intercooler and auxiliary cabin heater electric coolant pump , just beyond page 51

801S TITLE (jagrepair.com)

 

See post # 4 for coolant circuit

Repair Manual - Jaguar Forums - Jaguar Enthusiasts Forum

 

All I gotta say is I’ve seen people change the water 10 times.... yes it’s nuts but unless you completely drain the engine as well ( you really can’t) it’s gona take a while, keep at it lol