Operation
0750−1/A1
Winterthur Gas & Diesel Ltd.
1/ 18
Lubricating Oils
1. General 1..........................................................
2. System Oil 1.......................................................
2.1 Oil Care 2....................................................
2.2 Limits for Selected System Oil Parameters 2....................
2.3 Particle Size and Count 4......................................
2.4 Oil Samples 7.................................................
3. Cylinder Lubricating Oil 8...........................................
3.1 Oil Samples − Piston Underside Drain or Scrape-down 8.........
3.2 Fuel Sulphur Content and Cylinder Lubricating Oil Base Number 11
3.3 General Recommendations 13..................................
3.4 Intermediate BN Lubricating Oils 14.............................
4. Turbocharger Oil 14..................................................
5. Turning Gear Oil 14..................................................
6. Lubricants − Flywheel and Pinion Gear Teeth 14.......................
7. Environmentally Acceptable Lubricants 14............................
8. Applicable Lubricating Oils 15........................................
8.1 Lubricating Oil Instruction and Liability 15.......................
8.2 Cylinder Lubricating Oils 16....................................
8.3 System Oils 18.................................................
8.4 Lubricants − Flywheel and Pinion Gear Teeth 18.................
1. General
The engine has different oils for system oil and cylinder lubrication.
2. System Oil
System oil lubricates the bearings, the running parts of the engine and the crosshead
assembly. System oil is also used as hydraulic fluid in the servo oil system of the
engine and used to keep cool the pistons (see 8016−1 Lubricating Oil / Servo Oil
System).
The system oil must have:
D An additive-type crankcase oil of the SAE 30 viscosity grade must be used as
system oil.
D A minimum base number (BN) of 5.0 mg KOH/g and detergent properties.
D The load carrying performance from the FZG gear machine test method A/8, 3/90
in accordance with ISO 14635−1, failure load stage 11 as a minimum.
D Good thermal stability, anti-corrosion and anti-foam properties, and good
demulsifying performance.
Note: The applicable system oils for Wärtsilä 2-stroke engines are shown in
paragraph 8.2. For different or new lubricating oils, speak to or send a
message to Wärtsilä Services, Switzerland Ltd.
2016−11
Operating Media
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