Service Limits Of Engine Oil; Table 5-2 Table Of Engine Oil Properties - Mitsubishi S6B3 Operation & Maintenance Manual

Chapter 5 ENGINE OIL

Service Limits of Engine Oil

Engine oil degrades through the use and by lapse of time.
The quality of engine oil and fuel, and the operating condition of the engine affect the deterioration of the engine oil.
Replace the engine oil in accordance with Chapter 7 MAINTENACE SCHEDULE. However, only if the operating
load is stable and engine oil analyze result allows, oil replacement interval may be changed.
Refer to the following table for the determination of engine oil performance. If any of the following properties
exceeds the limit, replace the engine oil with new oil.
Properties
Kinetic Viscosity:
Base number
Acid number
Water Content
Flash point (open cup)
Pentane insoluble
Pentane insoluble coag-
ulated
5-4

Table 5-2 Table of engine oil properties

+30 % or less rate of change from
10 mm
2 2
mm /s [in /s]
+30 % or less rate of change from
@100°C [212°F]
-20 % or less rate of change from
2.0 or more with hydrochloric acid
mgKOH/g
1/2 of new oil or more with perchlo-
mgKOH/g
Vol %
°C [°F]
Wt %
Wt %
Standard
new oil
2 2
/s [0.155 in /s] or more
new oil
new oil
(HCL) method
ric acid (PCA) method
Up to +3.0 of new oil
0.2 or less
180 [356] or higher
0.5 or less
3.0 or less
Test method
JIS K 2283
:2007
ISO 3107
ISO 2909
JIS K 2501
:2003
ISO 3771
JIS K 2501
:2003
ISO 3771
JIS K 2275
:1996
ISO 9029
JIS K 2265
:2007
ISO 3769
ISO 2719
Compliance with ASTM D
893
Compliance with ASTM D
893