Question about 2003 Pontiac Montana

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How can I flush my whole coolant system

Is it good enough to just drain,flush,refill the radiator system vs flushing all of the old coolant in the total system, ie the engine block & hoses?

*2003 Montana, 90,000 miles.

THANKS!

TIM

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Preferable to flush as much out as possible to get rid of the old stuff and can be done at home by undoing the heater hose at the fire wall and using the garden hose to force water through until it comes out clean Dont turn hose on full blast as it will spray out over everything build up to it so it doesnt make a mess.Make sure the heater is in the on position so that water comes out the pipe you took the hose off.Either way though it will still be ok to just undo the bottom radiator hose as the majority of it will come out.

Posted on Nov 20, 2008

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