Suzuki SY413 Service Manual page 1832

Viscosity chart
SAE
ON-VEHICLE SERVICE
OIL CHANGE
1) Before changing or inspecting oil, be sure to stop engine and lift
vehicle horizontally.
2) With vehicle lifted up, check oil level and leakage.
If leakage exists, correct it.
3) Drain old oil and fill new specified oil by specified amount (up to
level hole).
4) Torque drain and level/filler plugs as specified below. Apply
sealant to thread of drain plug before installation.
"A": Sealant 99000-31110
1. Drive shaft (LH)
Tightening Torque
2. Oil drain plug
(a): 21 N·m (2.1 kg-m, 15.5 lb-ft)
3. Oil level/filler plug
NOTE:
D It is recommended to use API GL-4 75W-90 gear oil.
D Whenever vehicle is hoisted for any other service work
than oil change, also be sure to check for oil leakage.
Oil specification: API GL-4
Oil capacity: 2.4 liters (5.1/4.2 US/Imp. pt)
MANUAL TRANSMISSION (G13 AND G16 ENGINE MODELS) 7A-7
For SAE classification, refer to viscosity
chart at the left.