My overflow reservoir seems to be getting a little low with the cold temps this week, and I am going to top off the overflow reservoir. I have a jug of the Toyota red coolant. Do I just mix it 50/50 with distilled water?
Coolant / Distilled Water Mixture (1 Viewer)
- Thread starter Drogon
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
If it is premixed then no. If not you can use distilled water or tap water, either is fine.
But in all honesty, if all you are doing is topping off the overflow tank you can add straight coolant, it will actually help to lower the freeze point a few degrees.
You cannot use straight non mixed coolant as it's freeze point is above freezing, but a 50/50 mixture gets you to -34, then you can raise or lower that depending on the mixture ratio.
But in all honesty, if all you are doing is topping off the overflow tank you can add straight coolant, it will actually help to lower the freeze point a few degrees.
You cannot use straight non mixed coolant as it's freeze point is above freezing, but a 50/50 mixture gets you to -34, then you can raise or lower that depending on the mixture ratio.
- Joined
- Jan 4, 2014
- Threads
- 94
- Messages
- 3,045
- Location
- Little Rock, Arkansas
- Website
- www.facebook.com
Which Toyota Red coolant do you have? If it's the "Super Long Life Coolant" then it's already premixed and you don't need to add anything. Look on the bottle you have and if it says "DO NOT ADD WATER" then obviously you're good to go. But as @Spike555 said if you're just topping off the overflow reservoir then you can add straight coolant and it won't cause any issues.
- Thread starter
- #4
I ended up adding about 8oz of water and 8oz of coolant. Its about an inch below the max line now. The jug did not appear to be premixed.
- Thread starter
- #5
Last year around this time i did just add coolant only. I figured this time i should mix, since i already did a non mixture top off before.
The amount is negligible. I wouldn't go through the trouble of mixing such a small amount just to top off, even if it's the second time you're doing it. If you're concerned about keeping it 50/50, just use distilled water this go around.
I just had to fill my tank after a leak. Dealer told me mix it 50/50 with distilled water for the red cap long life bottle.
The yellow cap is premixed
The yellow cap is premixed
I use Prestone 50/50 and after bleeding the system I fill the overflow tank to the brim, the excess will go out the overflow tube and all is well and the world keeps on turning.
