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Originally Posted by Smallblock454
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Typical Forum response.
In 1989 Nissan made the SR20det Alloy engine, cast and turbocharged. It has 27 years of life and its only headgasket failure was caused by lean mixture causing high temperatures. That engine has seen race track temperatures for the last 10 years with 50% prestone 50% de-ionized water.
Our 17 year old porsches are not different. Ok maybe better looking and as good balance. What they don't require is magical coolant. They just require water that doesn't cause galvanic corrosion.
Also what is the point of long life coolant? Thermostats & water pump both fail way before the 5 year mark if the car is actually used and not stored. 5 Gallons of fluids with that 50/50 combo will set you back 40$ and you actually have 6 gallons of that stuff. That way you can give what it really needs! Good oil.
But that is my constructive criticism built from a decade of finding the best way to maintain a car without breaking the bank.
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