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aluminum heater core and brass/copper radiator

smiley

NAXJA Forum User
Location
Kentucky
What coolant should I use? I am about to replace my aluminum radiator with a copper brass one but my heater core is still aluminum. What coolant should i use?
 
What are trying to imply, you've also got a aluminum wp and t-stat housing bolted to a steel block/head?
 
Been using Prestone extended life coolant for decades in a Triumph car, aluminum and copper parts, along with cast iron. change it out every 3 or 4 years, even though the bottle says it is good for 5 years. No problems also run same in an old porsche with a cast iron Buick 231, and copper radiator, aluminum thermostate housing.
 
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