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SD1too · 10th October 2019, 11:29

Richard,

I'd say that unless you have evidence of contamination, don't bother using a flushing product, just drain and renew the antifreeze solution. Using distilled/de-ionised water rather than tap water will stop scale forming. You can pick up 5 litres for about the price of a bottle of lager in a pub.

Simon

10th October 2019, 11:29	#2
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,338 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	Richard, I'd say that unless you have evidence of contamination, don't bother using a flushing product, just drain and renew the antifreeze solution. Using distilled/de-ionised water rather than tap water will stop scale forming. You can pick up 5 litres for about the price of a bottle of lager in a pub. Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.