Regulations and care
Lubricating Oil
A4.05.08.00
M20-M601C
en / 21.08.2001 BA020067 2/8
Ĺ
1.3 Care of lubricating oil
The time between oil changes can be lengthened by the use of separators, oil centrifuges and by-
pass filters.
Mechanical filters suitable for filtering blended oils may be used only. Chemically active filters are
not permitted.
1.3.1 Lubricating oil filtering (By-pass)
By-pass oil cleaning in separators is specified for heavy-fuel operation because the finely dis-
tributed combustion deposits cannot be removed effectively from the oil in any other way.
The separator capacity should be designed in accordance with the Instructions for Heavy-Fuel
Operation in A3.04.08.nn
One stipulation for good separation of the lubricating oil is a low viscosity which requires a
correspondingly high temperature. When separating the temperature should be between
90 and 95 °C.
For gas oil or MDO operating by-pass filters can be used instead of separators.
1.3.2 Lubricating oil filtering (full flow)
In order to combat the higher amount of contamination in the lubricating oil when operating
on heavy fuel, the installation of an “Automatic back-flush filter” in conjunction with a follo-
wing indicator filter as double filter is necessary. (See the details in the Instructions for Heavy-
Fuel Operation A3.04.08.nn)
For gas oil or MDO operation, a double filter with manual change-over is sufficient.
Exception: automatic filters
1.4 Lubricating oil brand recommendations – Limitation of warranty
In most cases, the firm’s name is part of the brand designation of the lubricating oil and should,
when ordering, be placed in front of the designation to avoid confusion. Caterpillar/MaK has insuf-
ficient experience with brands of lubricating oil listed in column II. The intended use of any of these
oils must therefore be discussed with the engine manufacturer beforehand as otherwise the war-
ranty is no longer valid.
Caterpillar/MaK has no experience with oils not mentioned here. Caterpillar/MaK cannot give any
guarantee for the oil used because, for example, the composition and manufacture cannot be influ-
enced by Caterpillar/MaK. Furthermore no guarantee can be given for poor quality engine and lubri-
cating oil care nor for the use of non-approved fuels. Proof that a defect has not been brought about
by the lubricating oil must be provided by the user.
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