Ok, I'll start by apologizing for asking something that has been addressed ad nauseam, but I've searched the forums over and over and can't find a satisfying answer.

When I bought my 2003 XJ supercharged, I had the dealer (non-Jag) do a coolant flush. They put in Zerex G-05 phosphate-free. A month later I check my coolant and see that the G-05 is not orange. I can't find any reassuring info to convince me G-05 is ok in a 2003 engine. However, I do know that they flushed the system well, and I have checked the coolant reservoir for signs of sludge/gel multiple times and found none - the fluid is a clear pink. No overheating issues or problems with cabin heat.

For anyone with experience using G-05 (good or bad), I'd appreciate your advice.

 

Jag calls for Dexcool - orange... Will Zerex cause damage if all Dex is well flushed out? Probably not - but I'll let those that have more knowledge chime in.

 

I don't think you have too much to worry about ;o)
Keep an eye on the coolant level for a couple of days when stone cold (over night)

Jaguar changed from an ethyl glycol coolant in mid '99 (2000MY to you ) and went to an HOAT (Hybrid Organic Acid Technology) coolant which is pinkish red.
As you have had the cooling system completely flushed there will be no problems with incompatibility....just fill up with th same fluid. ;o)

Make sure you don't overfill....too many people are suggesting filling 'till it over flows...this is wrong!!
Only fill the expansion tank to the base of the filler neck, otherwise it's just syphoned off to the over flow tank down in the front left guard/fender.

 

Yea I just had my coolant flushed by a local chain shop I'm going to call & see exactly what type was used as it only reads "Item #SP09 PAF ANTIFREEZE".