Quote:
Originally Posted by Buehler445
It depends on how cheap you are. If it’s me:
I drain it
Fill with 50/50
Run it. You have to get it hot enough to open the thermostat and circulate the coolant.
Drain it.
Fill with 50/50.
If you use water you have to be kind of careful, because water boils at a lower temperature than coolant and you don’t want pressure. Moreover there is no chance that you will get all the water out. None. So then you have to mix your own and get it a little strong to account for how much is hanging around in there after you’ve drained it. Then you have to test, run, test and maybe drain some out and try again. And if you mix it too hot it won’t perform well and blah blah blah.
I’ve had irrigation motors that I’ve drained everything, opened all the petcocks turned it upside down the whole bit. Then I go to working on it and I get antifreeze everywhere. And that’s the motor by itself. It’ll hang out in the reservoir, radiator, heater core, everywhere. So you’re signing on for a lot of work to get it back right if you use water.
And Like I said we have some pretty old antifreeze hanging around in places. I know you have to shed more heat than we do, but we also plug radiators with shit, so maybe not.
Especially if it’s not a DD I wouldn’t. Check it in the reservoir. If it’s not discolored or cloudy I’d roll it. Eventually something will go wrong with something somewhere and you’ll have to drain it.
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What do you mean by the last part? Don’t do anything if it looks fine? Fluid looks fine as this is about 10k of usage on the Mustang but 5 years old so I thought I needed to drain it just because of age.