Plain old Power Steering fluid.
Drivers side under AC compressor
Dexron automatic transmission fluid or power steering fluid that you buy from the parts house.
At the power steering reservoir, the same place you check the level.
well on my 86 it is located on the pump its self driverside down twords the bottom below the AC compresser if you got AC
Dextron-II jr
On a 1991 Chevrolet Caprice Classic, the power steering fluid reservoir is typically located near the front of the engine bay, often on the driver's side. It is usually a translucent plastic container with a cap labeled for power steering fluid. To check the fluid level, simply remove the cap and look for a dipstick or markings on the side of the reservoir. Always ensure the vehicle is off and the engine is cool before checking the fluid.
To check the power steering fluid on your 1991 Caprice remove the cap on the power steering pump fluid reservoir and check the level on the fluid level indicator. If the fluid is warm(about 170 degrees)the fluid level should be at the "Full Hot" mark. If the fluid is cool(about 70 degrees) the fluid level should be at the "Full Cold" mark.Always use the correct power steering fluid to avoid damage to the hoses and seals which will result in fluid leaks. It should be noted that the reservoir (pardon my spelling) is located under the alternator (On my '91 with the 305, that is) - So you can't do it while the car is running.....Kenny
it should be on the passanger side to the right/front of the oil dip stick whics is right by the headers
dexron III or mercon V tranny fluids or any universal power steering fluid or any liquid including urine will work fine. being that this is a 79 im assuming this rust bucket is puking fluids all over the place, a bottle of lucas power steering fix might be in your best interest
You can add power steering fluid to your 1988 Chevy Astro by removing the top to the power steering fluid reservoir. Pour the fluid directly into the reservoir.
dextron
power steering fluid