I decided to flush my coolant system, did a few fill and flush cycles until only clear clean water came out. I bought the orange coolant from local Jaguar dealer and 5L distilled water - now here's the thing it appears to have turned green once I filled the system up, anybody got any idea if this is normal?
Thanks
Stewart

 

I assume the previous coolant was green?

Sounds as if you didn't get all the old coolant out. Did you turn the heater on full while you were flushing?

 

not normal...supercharged?

 

Just checked your profile since you dont have your car info in your signature...if you didn't drain/flush the intercooler, you've left some green stuff in there.

 

Thanks for the quick replies. I did three drains and refills over a week period, the last two drains were clear water with no sign of coolant, Will it do any harm if I leave it?

 

You didn't mention if you drained the intercooler separately.

 

No, I don't think I did, looks like I'll have to do it all over again!! All I did was to open the radiator plug and flush through with a hose, heater on full and engine running on tickover for a short while. Could you give me some tips on the best way to do this job?
Thanks
Stewart

 

As an Update & Addendum....
Land Rover owners forum talks of flushing system with white vinegar (1/2 gallion) as a cleaning agent for cooling system.
Flush system with heater on high several times with plain water...
Followed by adding 1/2 gallion of white vinegar and "topping off" cooling system with water and running the engine for 20-30 minutes, before draining all remaining crud from the cooling system...followed by final 100% water flush ... then refill with coolant concentrate (OAT or Dexcool) and bal;ance until full of distilled water.

Why concentrate? On chance that some air-locked water in the system might dilute a 50/50 premix coolant.
Why vinegar? An exceptional cleaning agent of calcium buildup in aluminum parts, plus easily available and inexpensive.

Question to all experienced Jaguar techs... What are your thoughts of negative effects, if any?