The fluid is probably contaminated with water. Change out the fluid with fresh. Check often, if froth returns suspect a leak in the system that enables water entry from either the road or If the unit has a cooler in the radiator, the cooling system.
Assuming you have power steering, you may have a loose belt or the power steering system has a leak and the power steering fluid reservoir is low or empty.
The power steering reservoir is mounted on top of the power steering pump.
There is not a reservoir for the power steering it is electronic
Where is the power steering reservoir for my 1995 bmw m3?
where is the power steering reservoir on a 2006 grand prix
The 1989 BMW 750 power steering reservoir is located on the back side of the engine. The power steering reservoir will be between the engine and the firewall.
You can add power steering fluid to your Nissan Pathfinder by adding it to the power steering reservoir. The power steering reservoir will be near the firewall in the engine compartment.
a restriction in the system such as a collasped or kinked hose,
Is a screen built into the power steering reservoir.
where is the power steering reservoir on 1992 infinity q45t
The 1993 Chevrolet Astro Van power steering reservoir can be found on the back side of the engine. The power steering reservoir will be between the engine and the firewall.
The power steering reservoir is in the transmission they both use hytran oil.