Quote:
Originally Posted by Mrmerlin
is the coolant thats in the truck all rusty now?
What does it look like ?
If its not rusty, I would drain it then rinse in a few gallons of distilled water,
then fill will a 50/50 mix of your favorite Prestone coolant and Distilled water
If it is rusty there could be issues with whatever cleaner you choose as removing the crud may cause leaks that the crud was plugging
Might be a good idea to swap in a new thermostat and coolant cap
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Not rusty, just a lot of chunks of Calcium, radiator clogged and I removed both thermostats and replaced