Power Steering Fluid Question

[cham]

My stock style steering box on my 69 camaro is getting hot and I believe making the fluid foam.

The power steering wasnt ever great but after putting on a set of headers that runs about 1/8" away from the steering box and adding a blower bringing up my header temps it was cutting out almost constant once the engine warmed up. Cold it works perfectly.

So, I put in some regular lucas oil P/S fluid and it made it a little better. Then I bought a heat shield and that made it better too. But the box is still getting pretty hot and will cut out on me off and on while cutting the wheels.

What I was thinking is, does anyone know of P/S fluid with a really high viscocity level or fluid that is designed for heat? Like hydrolic fluids, I know they can take certian levels of heat.

Good suggestions on a good method to flush the old stuff as much as possible (without tearing it down)?