Pastel is not electronic none conductive for 3 years lol. no ones ever said that haha. It works for 3 years after a few weeks all coolant except M3 become conductive lol. Ek fluids only last that long because they only have 8% glycol in it. Its states 10 to 25% but we've tested it and it has only got 8% in it. You can test this your self with a refractometer.