5-3
Chapter 5 ENGINE OIL
Selection of oil viscosity
Use the following chart to select the appropriate oil
viscosity according to the ambient temperature.
Excessively high oil viscosity causes power loss and
an abnormal rise of oil temperature, while excessively
low oil viscosity accelerates wear due to inadequate
lubrication, and also causes a decrease in engine out-
put due to leakage of combustion gas.
Fig. 5-2 Selection of oil viscosity
Temperature
°C [°F]
Engine oil
viscosity
SAE10W
SAE30
SAE40
SAE15W-40
-30 -20 -10 10 20 30 40 500
[122][50] [68] [86] [104][-21] [-4] [14] [32]
To Next Page
Loading...
Need help?
General
