Hi,

I bought Valvoline with zerex technology 50/50 mix is this a good coolant to put in my car coolant system??

 

Yup, that's a good coolant. Zerex Asian Vehicle is basically the same as Toyota Super Long Life (pink). Just a helluva lot cheaper.

I use that in all my Toyotas now, even the ones that specify Toyota red (I think pre-2004?). Have not had a problem in three years.