M1 ATF in a GM PS unit
- Thread starter psiclone
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What does the manual call for? If it calls for power steering fluid, use power steering fluid.
Use what the manual says, but I think (I do not own a GM product so I'm not sure) they recommend ATF in the PS system.
Well, I am going to be the contrarian. My truck, 2006 Sierra, calls for PSF but I went ahead and filled it with Mobil1 ATF after draining out the factory fill.
I have not noticed anything different except that the initial 1/2 second squeal from the PS pump when the truck is started up in -20C temperature has greatly diminished.
I have not noticed anything different except that the initial 1/2 second squeal from the PS pump when the truck is started up in -20C temperature has greatly diminished.
my GM PS gets only Redline PS or more recently MaxLife PS
fyi.............
Detailed Description
An amber colored, light bodied mineral oil that contains a specially developed additive package to provide good performance in power steering systems. Reduces power steering noise. Specially formulated to provide anti-corrosive and non foaming qualities with excellent lubrication for year-round use.
Detailed Description
An amber colored, light bodied mineral oil that contains a specially developed additive package to provide good performance in power steering systems. Reduces power steering noise. Specially formulated to provide anti-corrosive and non foaming qualities with excellent lubrication for year-round use.
I have had 3 GM p/s units that growl with the GM fluid. The only fluid that shut them up was the RP Max EZ synthetic PS fluid.
Originally Posted By: George7941
Well, I am going to be the contrarian. My truck, 2006 Sierra, calls for PSF but I went ahead and filled it with Mobil1 ATF after draining out the factory fill.
I have not noticed anything different except that the initial 1/2 second squeal from the PS pump when the truck is started up in -20C temperature has greatly diminished.
This has been exactly my experience with running synthetic ATF in GM power steering systems. The only difference I've noticed is improved cold-weather performance.
Well, I am going to be the contrarian. My truck, 2006 Sierra, calls for PSF but I went ahead and filled it with Mobil1 ATF after draining out the factory fill.
I have not noticed anything different except that the initial 1/2 second squeal from the PS pump when the truck is started up in -20C temperature has greatly diminished.
This has been exactly my experience with running synthetic ATF in GM power steering systems. The only difference I've noticed is improved cold-weather performance.
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