5-3
Chapter 5 ENGINE OIL
*1 It must have been certified API service classification CF by 2009.
*2 Temperature of test I (24°C [75.2°F]), Temperature of test II (93.5°C [200.3°F]), Temperature of test III (24°C
[75.2°F] after 93.5°C [200.3°F])
*3 Temperature of aluminum panel: 300°C [572°F] and 325°C [617°F]
Temperature of engine oil: 100°C [212°F]
Splatter time: 15 seconds
Downtime: 45 seconds
Test time: 8 hours
the properties are the weight of solid product.
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
Handling Engine Oil
When handling a large amount of engine oil more than the legally specified quantities, be sure to have the work per-
formed by a service station operated under the provision of the law. When removing oil from the engine or oil can,
use an oil pump. Do not suck oil using you mouth and a pipe.
Be sure to close the cap on the oil can after use.
Keep oil in a well-ventilated place and out of direct sunlight.
Be sure to obtain the MSDS of the engine oil and follow the instructions of the MSDS.
Bubbling test
*2
I
mL
10/0
JIS K 2518
ISO 6247
II
30/0
III
10/0
Panel caulking test
*3
300°C
[572°F]
mg
140 or lower
FED791-3462
325°C
[617°F]
300 or lower
Table 5-1 Recommended Limit of Engine Oil Properties
Item
Unit
Recommended limit
Test method
SAE10W
SAE30
SAE40
SAE15W-40
Temperature
°C [°F]
Engine oil
viscosity
-30
[-21]
-20
[-4]
-10
[14]
10
[50]
20
[68]
30
[86]
40
[104]
50
[122]
0
[32]
Before filling the engine with engine oil, stop the engine and make sure there are no open flames and other fire
hazards near the engine. Leaked or spilled oil on hot surfaces or electrical components can cause a fire. Wipe off
any spilled oil immediately and thoroughly. After filling oil, securely close the filler cap.
