Hi,
Has anyone used Aisin coolant ACT-002? Are they the OEM manufacturer?

 

Good question about Aisin coolant..whether it's the OEM source, but, until I know the answer, I'm sticking with the Toyota/Lexus brand. It's the only fluid I feel the need stay with the name brand offering. As a Fleet Manager, I did an in-depth study of coolants and found the Toyota pink coolant to be very advanced in its chemistry, and very good doing all the work we ask of it, i.e., corrosion protection, water pump lubricant, long life, and of course--cooling!