Added a cup tap water to my coolant system to top up as it was low. Should I flush and put fresh coolant in or roll with it? 2007 RXT.

[Redbarron]

Regrettably added a cup tap water to my coolant system to top up as it was low. Instantly realized this was a poor decision. Just wondering if I should flush the system and put fresh coolant in before going for another ride or if I will be ok since it was such a small amount.

Cheers.

 

[xspook]

According to the owners manual, " Cooling system must be filled with water and antifreeze solution (50% demineralized water, 50% antifreeze). BRP sells premixed coolant with freezing protection up to -37°C (-35°F) (P/N 293 600 038). To prevent antifreeze deterioration, always use the same brand. Never mix different brands unless cooling system is completely flushed and refilled. Refer to an authorized Sea-Doo dealer. "

Also states to use a coolant containing corrosion inhibitors for internal combustion aluminum engines.

My concern is the tap water may "contaminate" the coolant...maybe I'm being too cautious?

There are 5 qts of coolant in the system thus, there are 20 cups (160 ounces). You stated you added 1 cup (8 ounces) of tap water, so only 5% of your coolant is tap water.

I wouldn't let it stop me from riding, but would eventually (sooner than better) replace all of it.

 

[Digdog]

The one cup of water wouldn't do much so don't worry about that, however you're supposed to change the coolant every few years anyways.