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Air in the hydros

Discussion in 'Mechanic and Repair' started by Envy Lawn Service, Oct 22, 2004.

  1. pfifla1

    pfifla1 LawnSite Member
    Messages: 45

    oil expands when it gets hot, thats why, you are supposed to leave a few in. at the top of your tank for fluid expansion.
     
  2. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Messages: 11,087

    Really? I was not aware there was any other non-detergent oil available beyond the non-detergent SAE30....
     
  3. Envy Lawn Service

    Envy Lawn Service LawnSite Fanatic
    Messages: 11,087

    Yeah, I realize it expands some when hot... but just how much expansion should you expect? I'm guessing it rises an inch, maybe less, and this is a large reservoir. There is however plenty of room in the tank for expansion before the oil reaches the top.

    I'm hoping I'm able to get the filter tomorrow so I can do something....
     

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