"Replaces material # VV056 SynPower Power Steering Fluid
This product will help reduce and or eliminate the power steering whine noise associated with some GM Autos as stated in GM Bulletin # 1875699."
Available at your local Advance Auto. Make sure to order online (then go pick it up) and use a discount code.
Don't get caught up in base oil group goofiness. Instead, focus on performance characteristics and OEM approvals.
-Specifically recommended for GM trucks
-Addresses the two main PS system issues (noise and leaks)
-Pour point of -42°C
-Available locally at a very good price (far better than Amsoil or Red Line)
Thanks guys, maxlife it is for now.
From what I read, my duramax hydroboost holds 1 qt (??)
so I will vac out the reservoir and refill a few times for now.
MaxLife PSF retails for $7.99 at Advance Auto. With the 20% discount (no minimum purchase), even one quart gets knocked down to $6.39.
Various online places have Red Line PSF for $11.49, but of course they charge shipping on top of that. Even at your $11.95 price, that's a 87% increase in cost over MaxLife, so I'd still consider it to be far better.