Originally Posted by silentpoet
I am working on getting my 68 sedan deville road worthy. And the power steering fluid is low to dry. Near as I can tell it had been setting for about 20 years before I got it. But because it is so old it calls for Type A transmission fluid right on the power steering cap. I don't know what has replaced that and has the right characteristics to replace it. So what do I put in there?
Type "A" was replaced with the original Dexron.Any dexron will be OK, however, I would use a specific steering fluid for power steering. The generic advanced auto parts stuff is pretty decent.I am getting to where I dont like to use trans fluid for any steering. A lot of manufacturers are getting away from using trans (dexron etc.) and using regular steering fluid.
Dexron has detergents and that actually attracts dirt. The only thing that gets in a steering system is metal particles from the pump(mostly)and the magnet takes care of that. Plain steering fluid has no detergents and has a better viscosity(In My Opinion) and holds up better than dexron or atf.
I used hydraulic fluid( John Deere )in a few, the pumps went quiet and the steering was greatly improved. That was on a 2005 jeep cherokee with a 5.7 hemi.I think it liked it.The first pump had OE steering fluid and the pump went bad at 66,000 miles.We changed it and put in the JD fluid, that was a year ago, no problem.