Question about 1991 GMC Suburban

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A person told me I could use transmission fluid for power steering fluid ??? dis be true?

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  • Master
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This is true. however power steering fluid is cheaper, and ATF is only neccessary if called for. but, yes.

Posted on Apr 27, 2010

  • Geoff Walton Apr 27, 2010

    i should clarify that power steering fluid and transmission fluid are BOTH hydraulic fluids, ATF is slightly more viscous and has alot more additives and detergents to benefit transmissions. power steering fluid is preferable on modern vehicles, but ATF will not harm.

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Back in the day, possibly, nowadays, no. ATF is 'slippery' and PS fluid is more like hydrolic fluid than anything else

Posted on Apr 27, 2010

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  • GMC Master
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If you get into a pinch then sure...but I wouldn't make it a habit though....because if you can buy the tranny fluid, you could get the P/S fluid. If you did use the tranny fluid, drain your power steering and replentish with P/S fluid.

Posted on Apr 27, 2010

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What type of power steering fluid do I usr


no engine stated, and my be key, right?
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