Toro Groundsmaster 4500-D Operator's Manual page 56

High Viscosity Index/Low Pour Point
Anti-wear Hydraulic Fluid, ISO VG 46
Material Properties:
Viscosity, ASTM D445
Viscosity Index ASTM
D2270
Pour Point, ASTM D97
Industry Specifications:
Important: The ISO VG 46 Multigrade fluid has been
found to offer optimal performance in a wide range of
temperature conditions. For operation in consistently
high ambient temperatures, 65°F (18°C) to 120°F
(49°C), ISO VG 68 hydraulic fluid may offer improved
performance.
Premium Biodegradable Hydraulic Fluid-Mobil EAL
EnviroSyn 46H
Important: Mobil EAL EnviroSyn 46H is the only
synthetic biodegradable fluid approved by Toro. This
fluid is compatible with the elastomers used in Toro
hydraulic systems and is suitable for a wide-range
of temperature conditions. This fluid is compatible
with conventional mineral oils, but for maximum
biodegradability and performance the hydraulic system
should be thoroughly flushed of conventional fluid. The
fluid is available in 19 L (5 US gallon) containers or 208
L (55 US gallon) drums from your Mobil Distributor.
Important: Many hydraulic fluids are almost colorless,
making it difficult to spot leaks. A red dye additive for
the hydraulic system fluid is available in 20 ml (2/3 oz)
bottles. 1 bottle is sufficient for 15 to 22 L (4 to 6 US
gallons) of hydraulic fluid. Order part no. 44-2500 from
your Toro Distributor.
Check the hydraulic-fluid level as shown in
cSt @ 40°C (104°F)
44 to 48
cSt @ 100°C (212°F)
7.9 to 9.1
140 to 160
-37°C to -45°C (-34°F to
-49°F)
Vickers I-286-S (Quality
Level), Vickers M-2950-S
(Quality Level), Denison
HF-0
Figure 66.
56
Figure 66