[edgy]

.... pressure, does it run on...?



i have soem radiator additive that is for cooling but it says not recommended for LOW pressure systems (under 10 PSI)



anyone...?

 

[ToyotaPete]

Usually the pressure rating is on the Radiator cap, that's why TRD caps raise system pressure.

I'm not near my IS, otherwise I'd look for you.

 

[SexusinmyLexus]

The TRD radiator cap runs on 18.5 psi. So you should be ok.