[Perfectlap]

Originally Posted by shadrach74

I also second Southernstar's opinion that a coolant flush is make work.

I might disagree with that in this case. there were two owners, who knows if owner #1 mixed/topped ordinary coolant with the long lasting and owner #2 did nothing about it for all those subsequent years. Once these mix the longevity of the anti-corrosion elements are compromised. Best way to know for sure is to reboot with a fresh fill (of the right coolant and use only that type going forward). BUT if you're going to flush, do it correctly, zero air in the system or just replace the coolant tank because if its not burped right that probably by now brittle plastic tank is going to split and spill that $400 flush right onto the street. No need to pay for that twice. Maybe do the hoses too given that this was a lazy car.