Just add Zerex Asian Market coolant?

Im trying to delay doing a full flush until I have time, but my overflow res is low. I'm wondering if I can get away with just adding Zerex Asian Market coolant to the existing OEM super long life coolant? Has anyone done this? Instinct tells me not to risk it and just do a full flush. Just wondering if anyone has tried it...

 

I think Zerex is only available in blue and red Asian formula. I wouldn't risk mixing it with the pink.

 

According to their web site it's a violet color. If you dig around there, you'll likely find it's compatible with the Toyota SLLC product.

Scroll down towards the bottom of this- your question is answered:

http://www.valvoline.com/our-products/antifreeze-products/zerex-asian-vehicle-antifreeze-coolant

 

should be fine, you should also be able to use peak global lifetime. not sure whats available by you