Best way to replace coolant on V8 - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
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post #1 of 2 (permalink) Old 04-03-03, 12:47 AM Thread Starter
Formally Thomas
Join Date: May 2002
Location: Melbourne
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Lightbulb Best way to replace coolant on V8

Gonna change oil, filter and coolant this weekend.

havent done the coolant in the beast before.
Whats the best way to drain/flush the coolant on the 5ltr windsor?

And, how much coolant/water goes back into place...
im pretty sure the v8 doesnt need as much as the I6

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post #2 of 2 (permalink) Old 04-03-03, 01:31 AM
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To flush it properly, you have to take the thermostat out. Antifreeze/water must be 50/50, to stop boiling, evidently the Windsor has a couple of hot-spots in the head, so you need 50/50 to prevent localised boiling.

If you can't be bothered removing the thermo, just drain, refill with water, and drive around a bit. Do this a couple of times, although if the radiator hasn't been flushed for a while it is worth doing it.

After you have refilled it, turn the heater on high and go for a bit of a quiet drive, water level should drop a bit. I have found this to work with mine, the air seems to bleed out OK.

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