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Coolant System Flush

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I just drained my coolant and am wondering if I should flush the system with Prestone flush or just plain deionized water. The bike is a 2007 and the coolant is likely original so a good flush is in order.

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flush with the deionized water, let it get to temp, then refill with coolant.

Edited by DEMI

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My plan was to flush with Prestone Clean and Flush ( http://prestone.com/enmx/node/1168), then flush again with DI water, then freah coolant. Just want to be sure it's okay to use the Prestone cleaning/flushing product. The description says okay for all cooling system metals, but I want to be sure it isn't too agressive for using in a dirt bike. I'm sure it is probably fine.

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i don't know about using it for a bike, probably fine, but also probably not needed. I think most only flush with distilled water. New coolant is a good idea however.

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Distilled water and vinegar, 50/50 mix, followed by by a flush with distilled water only, then refill with coolant of choice.

 

Jim.

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i don't know about using it for a bike, probably fine, but also probably not needed. I think most only flush with distilled water. New coolant is a good idea however.

+1

And I use distilled water when mixing new coolant, available at Walmart for about $0.70/gallon.

 

IMO important to flush when changing type/brand of antifreeze.

 

Vinegar is a mild acid and does a good job of cleaning, the acid becomes even more reactive when heated.

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I'm aware of the vinegar technique, but I'm asking if it's okay to use the Prestone Clean and Flush.

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if it says safe, then it probably safe.

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Can't see why it would not, but I've never used it in a bike myself.

 

Jim.

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IMO it take a pretty gross and dirty cooling system to need a chemical flush treatment like Prestone. The most likely place for sludge to develop is near the filler, if I can't find sludge there I figure no need for a chemical flush. 

If there are only signs of light sludge try the vinegar flush first.

For me a normal water flush followed by a distilled water flush is all that is needed if changing antifreeze brand/type.

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I did the prestone clean and flush followed by DI water flush, then refilled with 50/50 ethylene glycol mix. I didnt see any discoloration after the prestone flush so apparently there wasnt any crap inside the cooling system.

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better go ride tomorrow!

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