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  1. #1
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    Power Steering Fluid

    2007 379 with a C15, i'm low on Powersteering Fluid, can i just get the stuff in the auto section of the TS or do i need some special stuff for trucks? (note: i dont see power steering fluid on the big truck side of the store)





    American Trucker


  2. #2
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    i fill ATF oil (automatic transmission fluid) in both systems

  3. #3
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    You don't see anything on the truck side because many fluids can be used, and you should use what is already in the reservoir, be it engine oil, type F transmission fluid, or something else.

    If you have a company shop, call and ask before doing anything.

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  5. #4
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    looks like transmission fluid its red and has a very sweet smell to it




    American Trucker

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  7. #5
    Road Train Member Pablo-UA's Avatar
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    In 90-s 15w40 oil was recomended, but I use any mineral ATF (dextron) becouse whent it is cold like now here with motor oil in PS I had to turn steering wheel gently from lock to lock twice before start!!!!

  8. #6
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    We used to use engine oil15W40 with no issues.
    Now I see our shop has switched to ATF.
    Same stuff you find in the car section.

  9. #7
    Road Train Member Pablo-UA's Avatar
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    Quote Originally Posted by king Q View Post
    We used to use engine oil15W40 with no issues.
    Now I see our shop has switched to ATF.
    Same stuff you find in the car section.
    Hah, it is -22 dgr C here now!

  10. #8
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    I recommend 15/40 it stays stable at a higher heat than ATF, and you do not need a special, additional fluid in the truck. Some drivers cause a lot of PS problems they are the ones that are always twitching the wheel.
    If the system has ATF and it is burnt, then you want to go to 15/40 if it has ATF and it is bright red leave it alone.
    When ever I had a system apart and drained I always added 15/40, especially when I was changing the PS pump.

  11. #9
    Last Few of the OUTLAWS Diesel Dave's Avatar
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    I use strickly Hydraulic fluid. It's non-detergent.

  12. #10
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    I use hydraulic oil also. No issues.

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