I probably wont get an answer to this because I havent got an answer on my thread asking about amsoil coolant. I recently replaced my ps fluid because it was getting dark with pyroil honda psf. I justed suck a bottle pump in the reserve and pumped it all out filled it up, turned the wheel from lock to lock a bunch of times and them repeated. I just got the service manual and I see that is not the right way to do it and that I only replaced probably 50% of the fluid. Its probably fine but I was thinking of just draining the whole system and useing the amsoil universal synthetic psf just because my friend has a honda that had ps whine and after useing the amsoil it went away. I wanted to hear if any of you had experiance with this product?