by DJV8T5 » December 30th, 2012, 7:40 am
Consider the total volume of your cooling system (around 15~17l total inc heater core, radiator, block and hoses) and work out cost vs doing a coolant flush every xxkm, and refill after replacement of parts like water pump, radiator, hoses, heater core and anything else. Most coolants claim to last between 50,000km and 100,000km. There isn't too much wrong with engine running hotter than normal, unless it is significantly hotter, a slight temp increase wont do much damage to parts.
It has been around for a while, Burson's was selling it when I was working there, I don't recall ever selling any of it in 18 months I was there at all. If the price is similar to what you were saying ($140/5l) then it will cost you approx $420 to fill the cooling system (more when you add the extra for the lines to the gas converter) vs ~$20 for a bottle of coolant (I use Tectaloy Gold 1l bottle) which covers me til I replace something in the cooling system and I put more in.
I cant see the cost being worthwhile short or long term for your average daily driver. Each to their own though.