Originally Posted by ToySub1946 (Post 2371091)

I have a 2015 FRS, purchased new, now with 21,330 miles on it.
Noticed coolant somewhat low when it was new...after some miles driven...radiator was full, but overflow bottle showing no coolant.

Finally topped it off to low coolant level when odometer showed about 17,000 miles. {I don't allow the Dealership to add any fluids during oil and filter changes}

I used Best available Prestone brand, as FRS coolant was same color (green)...and I see no point in buying Prestone coolant which is premixed, as full strength coolant price is more product for the dollar.

I'd guess these cars, when new, have some bubbles in the cooling system, so they can't get them totally full at the factory.

I've found no leaks from my car, so no worries...just a normal situation.

Bottom line: I'd drive the car a while before worrying about it's coolant level...see if it gets any lower...then add as necessary. As long as you check coolant level in radiator itself, [certainly with car cold], if radiator itself is totally full, no real worries for a while.

Originally Posted by 22R (Post 2936749)

Check if any level below rad cap. Watch temp gauge and you should be ok...Why can't you buy any before the weekend ??? I would get some and add just to be safe.


22R

Originally Posted by Feelings (Post 2936894)

It's just an expansion/overflow tank. If the engine is COLD and you can still see coolant, you're fine. Bring your engine up to temp and have another look, it'll probably be close to the full mark.
In the winter when everything is cold I can barely see coolant in that overflow and I haven't worried about it. Not worth the $ to buy premix for nothing.

Originally Posted by Feelings (Post 2936894)

It's just an expansion/overflow tank. If the engine is COLD and you can still see coolant, you're fine. Bring your engine up to temp and have another look, it'll probably be close to the full mark.
In the winter when everything is cold I can barely see coolant in that overflow and I haven't worried about it. Not worth the $ to buy premix for nothing.

Originally Posted by Exrald (Post 2936900)

Thank you! I've been stressing about it since yesterday. I'm about to do some runs this Saturday, so I don't want to overheat my car.

2013 Scion FRS @Exrald.frs

Originally Posted by strat61caster (Post 2937012)

Buy a gallon of distilled water at any grocery store (gas stations have them too but usually overpriced), throw a cup of water in there when it's cold to bring it up over 'minimum' and check it again after it's nice and hot, should be much nearer the top. Toss it in the back seat and maybe add a little bit of water if it drops below minimum again, repeat until you're happy.

You don't need to spend the extra $30 on antifreeze, your car will likely never be in freezing conditions anyway. You and I could probably run it on straight water year round.

Originally Posted by Exrald (Post 2937250)

I wish I saw this sooner. I got the coolant for $26. Not bad as I expected lol. But I filled it up to full on cold engine.

2013 Scion FRS @Exrald.frs