@hassantahir2
Yes, NASA if not very good then at least it is Good Quality
Might be you have experienced counterfeit Product(I always used to buy directly by Authorized Distributor; not for saving money but for ensuring Genuine-ness of the product)
I have used almost all types & came to conclusion:
Caltex, ZIC, Emirates & Turtle are of Very Very Bad Pathetic Quality while I have rated in following order as per my experience:
Toyota Coolant 10 / 10
Honda Coolant 09 / 10
NASA Coolant 8.5 / 10
Fuchs Never Experienced
Emirates 03 / 10
ZIC 2.5 / 10
Caltex 02 / 10
Turtle 0 / 10
Local Made 0 / 10