Got some of that fancy synthetic Mercon/Dexron III ATF on the shelf from your tranny fluid change (or tranny swap) that you don't know what to do with? Why not use it to refresh your power steering fluid? It's easy and cheap to do:
- 2-3 quarts of fresh Mercon/Dexron III ATF.
- 3/8" inside diameter tubing, at least 3 feet, more is fine.
- shop rags.
- waste oil container (an empty milk jug works great).
- hand vacuum pump or turkey baster (don't use the one from the kitchen or you'll hear about it :blah:
- pliers (to loosen spring hose clamp)
- step stool, tire step, etc. (optional but makes it easier to get at everthing from the side of the truck.)
1) Using a hand pump or turkey baster, suck all of the old fluid out of the power steering reservoir.
2) Fill the reservoir with fresh fluid.
3) Locate the hose that goes from the power steering reservoir to the brake master cylinder. This is a low pressure hose that just uses a spring hose clamp to hold it on to the brake master cylinder, near the top, right behind the brake fluid reservoir.
4) Remove the PS hose from the top of the brake master cylinder and attach a piece of 3/8" I.D. tubing to the nipple on the brake master cylinder and route the tubing to a waste container.
5) Fire up the engine.
6) Pump the brake pedal a few times. This will force old fluid out of the system into the waste container.
7) Top off the power steering reservoir with fresh fluid.
8) Repeat steps 6&7 until you've put 2-3 quarts of fresh fluid into the system.
9) Shut off the engine.
10) Replace the hose on the brake master cylinder.
11) Ensure power steering reservoir is at the proper level.
Enjoy a healthy and quiet PS system!