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hydraulic fluid specification update

Discussion in 'Hustler Turf Equip (Archived)' started by lynchlawn, Jul 24, 2009.

  1. lynchlawn

    lynchlawn LawnSite Member
    Posts: 18

    Can the older -2005-2006 Super Z's (Model 927061) Efi"s and/or walkbehinds be upgraded with SAE 20w50 oil in the hydraulic system? And does Lubrizol still need to be used with an upgrade? What would be the minimal oil rating(CF?).
  2. mowerconsultant

    mowerconsultant LawnSite Fanatic
    Male, from Syracuse, NY
    Posts: 9,761

    You can use 20w50 in the hydro system, we dont suggest the use of Lubrizol.
    You can use this oil in older units also.
    Here is the information from our service department.

    Hydraulic oil changes in production
    January 1, 2008.
    Discontinued use of Lubrizol. Due to improvements in todays hydraulic
    wheel motor designs, lubrizol is no longer required by our hydraulic
    component supplier (except 4600).

    August 1, 2008.
    Discontinued use of 10w-40 motor oil in all Hustler Mini Z's, Super Mini Z's,
    Hustler Z's and Super Z's hydraulic systems to 20w-50 motor oil. Per our
    hydraulic supplier recommendation, todays higher horsepower harder
    working hydraulic systems need an oil to keep up with the demand, and so
    20w-50 is now recommended on Hustler Turf mowers built since August.
    Note: For mowers used in cold weather applications, a warm-up period of
    five to ten minutes is recommended before the unit is operated.

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