G-man
BBQ king
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I too get the blue for free. My understanding was that the red was long life and the blue was not. ie the anti corrosion inhibitors in it don't last as long.
I believe the red can last for around 5 years and the blue a year or two. So if that's the case and I get blue for free ( and I have a leak I'm trying to track down) I'm going to keep putting blue in till I find it and then just change it every year which should be well within the time to keep the anti corrosion stuff alive.
I have a V8 btw. If anybody thinks this is a bad idea please let me know
I am going to see if I can get any red for free anyway as if I can it will save the effort of changing it every year.
if your cooling system has been designed to use organic acid tech coolant it will not like ethylene glycol as it may attack some of the seals and hoses and it works the same the other way round, also NEVER mix the two or the whole lot will turn to a brown murky useless slop
there are a few anti-freezes/coolants that will mix with both but they are not cheap (VW made a purple one that could be used in anything)