Stock Power Steering Fluid Temps
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2004-2007 Cadillac CTS-V General Discussion Discussion, Stock Power Steering Fluid Temps in Cadillac CTS-V Series Forum - 2004 - 2007; Does anyone know what the power steering fluid temps are when fully warmed up? I'm also wondering what they get ...
  1. #1
    PISNUOFF Guest

    Stock Power Steering Fluid Temps

    Does anyone know what the power steering fluid temps are when fully warmed up? I'm also wondering what they get up to during track time.

    I'm trying to see if it's worth getting a combination oil and transmission/power steering cooler. It combines a 4-pass trans cooler and a 6-pass oil cooler into one unit. I just don't want the oil to heat up the power steering fluid.

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  3. #2
    NormV is offline Cadillac Owners Connoisseur
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    Re: Stock Power Steering Fluid Temps

    I think it would be a good idea to combine anything with PS fluid. Especially since oil temps could see upper 200F which would turn your PS resovoir to mush.

    Norm

  4. #3
    rjoffe is offline Cadillac Owners Connoisseur
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    Re: Stock Power Steering Fluid Temps

    At my last track session (Shenandoah), I recorded peak power steering temp of 264 F. This was at the paddock after about 1/2 lap cool down. This was measured with a infrared pyrometer in the reservoir.

    Fluid is redline power steering fluid.

    I was concerned about PS boilover, but the fluid which I see in my engine compartment is not boiled over, but rather g-force induced spillage from our vented caps. I sent a note to Red Line, and they confirmed that this was way below the boiling point (although they would not tell me what that point was).

    Hopefully that will help. Based on my own analysis, I do not have any plans to add or modify the stock PS cooler.

    Ron

  5. #4
    darkman's Avatar
    darkman is offline Cadillac Owners Master
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    Re: Stock Power Steering Fluid Temps

    Power steeing fluids are the equivalent of automatic transmission fluid (ATF) and generally have Flash Points in excess of 400 degrees F and Boiling Points well over 600 degrees F. That is not say however, that these fluids are fully functional at those temperatures nor will exposure to high temperatures leave them unaffected. For example, the Owners Manual suggests that high temperatures (over 290F) accelerates the need to change the transmission fluid, which is also ATF.

  6. #5
    NormV is offline Cadillac Owners Connoisseur
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    Re: Stock Power Steering Fluid Temps

    Ask vsam about long term effects of high temp PS on the pump!a.

    That was definitely higher than I thought it would be but The course would leave more than just PS fluid hot.

    You can realign the cooler, the way it should have been - horizontally, for less than the cost of a new PS pump.

    The cap leaks out the breather. I just keep the fluid low and have a C5 Z51 PS cooler for insurance.

    Norm

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