Phillips HG Fluid
Note: Oils within this group are interchange-
able.
Group 2 Hydraulic Oil—Recommended for ambi-
ent temperatures consistently above 21° C (70°
F):
ISO type 68 anti-wear hydraulic fluid
Mobil DTE 26 or DTE 16
Shell Tellus 68
Amoco Rykon Oil 68
Arco Duro AW S-315
Boron Industron 53
BP Oil Energol HLP68
Castrol Hyspin AWS68
Chevron Chevron EP68
Citgo Citgo A/W68
Conoco Super Hydraulic Oil 31
Exxon Nuto H68
Gulf 68AW
Pennzoil AW Hyd Oil 68
Phillips Magnus A315
Standard Industron 53
Texaco Rando HD68
Union Unax AW 315
Note: Oils within this group are inter-
changeable.
IMPORTANT: Two groups of hydraulic oil are
specified to allow optimal operation of the
machine in a wide range of temperatures encoun-
tered. The group 1 oils are a multi-viscosity
hydraulic oil that allow operation at lower tem-
peratures without the increased viscosity associat-
ed with straight viscosity oils.
The Mobil DTE 26 type oils are straight viscosity
oils which remain slightly more viscous at higher
temperatures than the multi-viscosity oils.
Using the Mobil 424-type oils in the higher ambient
temperatures may result in decreased efficiency in
some hydraulic components compared to using the
Mobil DTE 26 type oils.
Using the Mobil DTE 26 type oils in the lower ambi-
ent temperatures may result in harder starting,
increased engine laboring while cold, sluggish or
non-operating valve spools while cold and increased
filter back pressure due to the higher oil viscosity.
Select the set of conditions (either ambient tempera-
tures above 21° C (70° F) or below 38° C (100° F),
and use that type of oil throughout the year, rather
than changing oil types several times per year.
Group 3 Hydraulic Fluid (Biodegradable):
ISO VG 32/46 anti-wear hydraulic fluid
Mobile EAL 224L
Note: This biodegradable hydraulic fluid in this
group is not compatible with the fluids in
group 1 or 2.
Note: When changing from one type of hydraulic
oil to the other, remove all the old oil from
the system, because some brands of one type
are not completely compatible with some
brands of the other type of hydraulic oil. If
you always use Mobil products, the two
types of oil are compatible and interchange-
able.
IMPORTANT: Use only the types of hydraulic
oils specified. Other fluids could cause system
damage.
Note: A red dye additive for the hydraulic system
oil is available in 20 ml bottles. One bottle
is sufficient for 15–22 l of hydraulic oil.
Order Part No. 44-2500 from your
Authorized Toro Distributor
1. Position the machine on a level surface, lower
the cutting units and stop the engine.
2. Clean the area around the filler neck and cap of
the hydraulic tank. Remove the cap from the
filler neck.
13
Before Operating
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