9 Operating media Caution Do not mix oil of different brands together. Oils of different brands are mostly not compatible with each other. If they are mixed, the mixtures can cause components such as piston rings, cylinders etc. to seize up and cause wear to moving parts. The best thing is to keep to one brand and one type of lubricating oil for each subsequent service.
Lubricating oil Limits concerning motor oil If an analysis of the used lubricating oil is conducted to determine its condition, consult the overview below. Change the oil if one or more of the conditions is not met.
Note • How often the oil has to be changed depends on the characteristics of the fuel. Only use the recommended fuels. • The limit for the total base number is half of that of new oil in the case of an analysis method based on perchloric acid.
Limits concerning motor oil Characteristic Viscosity
Unit
Test method
Limit
cSt @ 100°C
JIS: K 2283
+30% / -15% max. for new oil
Total base numberl (HCl)
mgKOH/g
Total acid number
mgKOH/g
Water content
% volume
JIS: K 2275
0.2 max.
°C
JIS: K 2265
180 min.
Flash point Pentane insolubles
% weigth
Coagulated pentane insolubles
% weight
JIS: K 2501
ASTM: D 893
2.0 min. +3.0 max. for new oil
0.5 max. 3.0 max.
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