--- In [email protected], "Pengalanty" <pengala...@...> wrote: > > > They recommend "Please try to add ## Propylene glycol ## to your system" > > Can anyone advise please? > > Is antifreeze with ## Ethylene Glycol ## the same as the above, or does it > have the same basic make-up, presumably to stop corrosion of Alloy and Steel > components?
No it is not but both have corrosion inhibitors and are available in two and five year lives from Motor Factors. It is the corrosion inhibitors that probably get "used up". hence the "life". I normally advise a maximum of 50% antifreeze although most of the diesel boiler manufacturers say 30%. It is VITAL to give the system a really thorough flush if you suspect there may be any Ethylene Glycol present because it reacts with Propylene Glycol to form a jelly like substance. Tony Brooks
