Unless it is the Zerex ASIAN coolant, then you need to flush it good.
(yes there is a Zerex for Toyota called Zerex for Asian vehicle at WM).
The Asian coolant has no silicates.
If that Zerex have silicates then it will gel when mix with no silicates coolant.
You need to check the label in the container.
Check Google for info.
Next time if you run out, you can just use DI or Distilled Water and you are set instead of putting another type of coolant.
You can always add the right coolant later closer to winter since you probably need to add some anyway.
Last edited by JMJNet; 04/21/19 05:01 PM.